diff --git a/src/config.ts b/src/config.ts
index e064da3..0cf2a32 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -6,6 +6,7 @@ export interface DiscourseSyncSettings {
 	apiKey: string;
 	disUser: string;
 	category: number;
+	selectedTags: string[];
 }
 
 export const DEFAULT_SETTINGS: DiscourseSyncSettings = {
@@ -13,6 +14,7 @@ export const DEFAULT_SETTINGS: DiscourseSyncSettings = {
 	apiKey: "apikey",
 	disUser: "DiscourseUsername",
 	category: 1,
+	selectedTags: []
 };
 
 export class DiscourseSyncSettingsTab extends PluginSettingTab {
diff --git a/src/main.ts b/src/main.ts
index 0e90d42..9e65a1a 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -140,11 +140,13 @@ export default class DiscourseSyncPlugin extends Plugin {
 
 		const body = JSON.stringify(isUpdate ? {
 			raw: content,
-			edit_reason: "Updated from Obsidian"
+			edit_reason: "Updated from Obsidian",
+			tags: this.settings.selectedTags || []
 		} : {
 			title: this.activeFile.name,
 			raw: content,
-			category: this.settings.category
+			category: this.settings.category,
+			tags: this.settings.selectedTags || []
 		});
 
 		try {
@@ -228,7 +230,6 @@ export default class DiscourseSyncPlugin extends Plugin {
 			// 获取当前活动文件
 			const activeFile = this.app.workspace.getActiveFile();
 			if (!activeFile) {
-				console.error('No active file found');
 				return;
 			}
 
@@ -247,9 +248,11 @@ export default class DiscourseSyncPlugin extends Plugin {
 			}
 			
 			await this.app.vault.modify(activeFile, newContent);
-			console.log('Successfully updated frontmatter with post ID:', postId);
 		} catch (error) {
-			console.error('Error updating frontmatter:', error);
+			return {
+				message: "Error",
+				error: "更新失败"
+			};
 		}
 	}
 
@@ -288,6 +291,66 @@ export default class DiscourseSyncPlugin extends Plugin {
 		}
 	}
 
+	private async fetchTags(): Promise<{ name: string; canCreate: boolean }[]> {
+		const url = `${this.settings.baseUrl}/tags.json`;
+		const headers = {
+			"Content-Type": "application/json",
+			"Api-Key": this.settings.apiKey,
+			"Api-Username": this.settings.disUser,
+		};
+
+		try {
+			const response = await requestUrl({
+				url: url,
+				method: "GET",
+				contentType: "application/json",
+				headers,
+			});
+
+			if (response.status === 200) {
+				const data = response.json;
+				// 获取用户权限信息
+				const canCreateTags = await this.checkCanCreateTags();
+				// Discourse 返回的 tags 列表在 tags 数组中
+				return data.tags.map((tag: any) => ({
+					name: tag.name,
+					canCreate: canCreateTags
+				}));
+			}
+			return [];
+		} catch (error) {
+			return [];
+		}
+	}
+
+	// 检查用户是否有创建标签的权限
+	private async checkCanCreateTags(): Promise<boolean> {
+		try {
+			const url = `${this.settings.baseUrl}/u/${this.settings.disUser}.json`;
+			const headers = {
+				"Content-Type": "application/json",
+				"Api-Key": this.settings.apiKey,
+				"Api-Username": this.settings.disUser,
+			};
+
+			const response = await requestUrl({
+				url: url,
+				method: "GET",
+				contentType: "application/json",
+				headers,
+			});
+
+			if (response.status === 200) {
+				const data = response.json;
+				// 检查用户的 trust_level
+				return data.user.trust_level >= 3;
+			}
+			return false;
+		} catch (error) {
+			return false;
+		}
+	}
+
 	registerDirMenu(menu: Menu, file: TFile) {
 		const syncDiscourse = (item: MenuItem) => {
 			item.setTitle("发布到 Discourse");
@@ -306,9 +369,12 @@ export default class DiscourseSyncPlugin extends Plugin {
 	}
 
 	private async openCategoryModal() {
-		const categories = await this.fetchCategories();
+		const [categories, tags] = await Promise.all([
+			this.fetchCategories(),
+			this.fetchTags()
+		]);
 		if (categories.length > 0) {
-			new SelectCategoryModal(this.app, this, categories).open();
+			new SelectCategoryModal(this.app, this, categories, tags).open();
 		}
 	}
 
@@ -363,10 +429,15 @@ export class NotifyUser extends Modal {
 export class SelectCategoryModal extends Modal {
 	plugin: DiscourseSyncPlugin;
 	categories: {id: number; name: string}[];
-	constructor(app: App, plugin: DiscourseSyncPlugin, categories: {id: number; name: string }[]) {
+	tags: { name: string; canCreate: boolean }[];
+	canCreateTags = false;
+
+	constructor(app: App, plugin: DiscourseSyncPlugin, categories: {id: number; name: string }[], tags: { name: string; canCreate: boolean }[]) {
 		super(app);
 		this.plugin = plugin;
 		this.categories = categories;
+		this.tags = tags;
+		this.canCreateTags = tags.length > 0 ? tags[0].canCreate : false;
 	}
 
 	onOpen() {
@@ -379,8 +450,11 @@ export class SelectCategoryModal extends Modal {
 		const isUpdate = this.plugin.activeFile.postId !== undefined;
 		contentEl.createEl("h1", { text: isUpdate ? '更新帖子' : '发布到 Discourse' });
 		
+		// 创建表单区域容器
+		const formArea = contentEl.createEl('div', { cls: 'form-area' });
+		
 		// 创建选择器容器
-		const selectContainer = contentEl.createEl('div', { cls: 'select-container' });
+		const selectContainer = formArea.createEl('div', { cls: 'select-container' });
 		if (!isUpdate) {
 			// 只在新建帖子时显示分类选择
 			selectContainer.createEl('label', { text: '分类' });
@@ -391,13 +465,154 @@ export class SelectCategoryModal extends Modal {
 			});
 		}
 
-		const submitButton = contentEl.createEl('button', { 
+		// 创建标签选择容器
+		const tagContainer = formArea.createEl('div', { cls: 'tag-container' });
+		tagContainer.createEl('label', { text: '标签' });
+		
+		// 创建标签选择区域
+		const tagSelectArea = tagContainer.createEl('div', { cls: 'tag-select-area' });
+		
+		// 已选标签显示区域
+		const selectedTagsContainer = tagSelectArea.createEl('div', { cls: 'selected-tags' });
+		const selectedTags = new Set<string>();
+
+		// 更新已选标签显示
+		const updateSelectedTags = () => {
+			selectedTagsContainer.empty();
+			selectedTags.forEach(tag => {
+				const tagEl = selectedTagsContainer.createEl('span', { 
+					cls: 'tag',
+					text: tag
+				});
+				const removeBtn = tagEl.createEl('span', {
+					cls: 'remove-tag',
+					text: '×'
+				});
+				removeBtn.onclick = () => {
+					selectedTags.delete(tag);
+					updateSelectedTags();
+				};
+			});
+		};
+
+		// 创建标签输入容器
+		const tagInputContainer = tagSelectArea.createEl('div', { cls: 'tag-input-container' });
+		
+		// 创建标签输入和建议
+		const tagInput = tagInputContainer.createEl('input', {
+			type: 'text',
+			placeholder: this.canCreateTags ? '输入标签名称（回车添加）' : '输入标签名称（回车添加）'
+		});
+
+		// 创建标签建议容器
+		const tagSuggestions = tagInputContainer.createEl('div', { cls: 'tag-suggestions' });
+
+		// 处理输入事件，显示匹配的标签
+		tagInput.oninput = () => {
+			const value = tagInput.value.toLowerCase();
+			tagSuggestions.empty();
+
+			if (value) {
+				const matches = this.tags
+					.filter(tag => 
+						tag.name.toLowerCase().includes(value) && 
+						!selectedTags.has(tag.name)
+					)
+					.slice(0, 10);
+
+				if (matches.length > 0) {
+					// 获取输入框的位置和宽度
+					const inputRect = tagInput.getBoundingClientRect();
+					const modalRect = this.modalEl.getBoundingClientRect();
+					
+					// 确保建议列表不会超出模态框宽度
+					const maxWidth = modalRect.right - inputRect.left - 24; // 24px 是右侧padding
+					
+					// 设置建议列表的位置和宽度
+					tagSuggestions.style.top = `${inputRect.bottom + 4}px`;
+					tagSuggestions.style.left = `${inputRect.left}px`;
+					tagSuggestions.style.width = `${Math.min(inputRect.width, maxWidth)}px`;
+
+					matches.forEach(tag => {
+						const suggestion = tagSuggestions.createEl('div', {
+							cls: 'tag-suggestion',
+							text: tag.name
+						});
+						suggestion.onclick = () => {
+							selectedTags.add(tag.name);
+							tagInput.value = '';
+							tagSuggestions.empty();
+							updateSelectedTags();
+						};
+					});
+				}
+			}
+		};
+
+		// 处理回车事件
+		tagInput.onkeydown = (e) => {
+			if (e.key === 'Enter' && tagInput.value) {
+				e.preventDefault();
+				const value = tagInput.value.trim();
+				if (value && !selectedTags.has(value)) {
+					const existingTag = this.tags.find(t => t.name.toLowerCase() === value.toLowerCase());
+					if (existingTag) {
+						selectedTags.add(existingTag.name);
+						updateSelectedTags();
+					} else if (this.canCreateTags) {
+						selectedTags.add(value);
+						updateSelectedTags();
+					} else {
+						// 显示权限提示
+						const notice = contentEl.createEl('div', {
+							cls: 'tag-notice',
+							text: '权限不足，只能使用已有的标签'
+						});
+						setTimeout(() => {
+							notice.remove();
+						}, 2000);
+					}
+				}
+				tagInput.value = '';
+				tagSuggestions.empty();
+			}
+		};
+
+		// 处理失焦事件，隐藏建议
+		tagInput.onblur = () => {
+			// 延迟隐藏，以便可以点击建议
+			setTimeout(() => {
+				tagSuggestions.empty();
+			}, 200);
+		};
+
+		// 处理窗口滚动时更新建议列表位置
+		const updateSuggestionsPosition = () => {
+			if (tagSuggestions.childNodes.length > 0) {
+				const inputRect = tagInput.getBoundingClientRect();
+				tagSuggestions.style.top = `${inputRect.bottom + 4}px`;
+				tagSuggestions.style.left = `${inputRect.left}px`;
+				tagSuggestions.style.width = `${inputRect.width}px`;
+			}
+		};
+
+		// 监听滚动事件
+		this.modalEl.addEventListener('scroll', updateSuggestionsPosition);
+		
+		// 在模态框关闭时移除事件监听
+		this.modalEl.onclose = () => {
+			this.modalEl.removeEventListener('scroll', updateSuggestionsPosition);
+		};
+
+		// 创建按钮区域
+		const buttonArea = contentEl.createEl('div', { cls: 'button-area' });
+		const submitButton = buttonArea.createEl('button', { 
 			text: isUpdate ? '更新' : '发布',
 			cls: 'submit-button'
 		});
 
 		// 创建提示信息容器
-		const noticeContainer = contentEl.createEl('div');
+		const noticeContainer = buttonArea.createEl('div');
 		
 		submitButton.onclick = async () => {
 			if (!isUpdate) {
@@ -410,6 +625,10 @@ export class SelectCategoryModal extends Modal {
 				await this.plugin.saveSettings();
 			}
 			
+			// 保存选中的标签
+			this.plugin.settings.selectedTags = Array.from(selectedTags);
+			await this.plugin.saveSettings();
+			
 			// 禁用提交按钮，显示加载状态
 			submitButton.disabled = true;
 			submitButton.textContent = isUpdate ? '更新中...' : '发布中...';
diff --git a/styles.css b/styles.css
index b245c70..1ffa67d 100644
--- a/styles.css
+++ b/styles.css
@@ -10,16 +10,35 @@ If your plugin does not need CSS, delete this file.
 /* 基础模态框样式覆盖 */
 .modal.mod-discourse-sync {
   max-width: 500px;
-  max-height: 80vh;
+  max-height: 90vh;
   background-color: var(--background-primary);
   border-radius: 8px;
   box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
+  display: flex;
+  flex-direction: column;
 }
 
 /* 内容区域样式 */
 .discourse-sync-modal {
   padding: 24px;
   width: 100%;
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+  overflow-y: auto;
+}
+
+/* 表单区域 */
+.discourse-sync-modal .form-area {
+  flex-grow: 1;
+  min-height: 0;
+  margin-bottom: 16px;
+}
+
+/* 按钮区域固定在底部 */
+.discourse-sync-modal .button-area {
+  flex-shrink: 0;
+  margin-top: auto;
 }
 
 .discourse-sync-modal h1 {
@@ -29,27 +48,37 @@ If your plugin does not need CSS, delete this file.
   color: var(--text-normal);
 }
 
-.discourse-sync-modal .select-container {
+/* 表单容器通用样式 */
+.discourse-sync-modal .select-container,
+.discourse-sync-modal .tag-container {
   margin-bottom: 24px;
+  padding: 0;  /* 移除内边距 */
 }
 
-.discourse-sync-modal .select-container label {
+.discourse-sync-modal .select-container label,
+.discourse-sync-modal .tag-container label {
   display: block;
   margin-bottom: 8px;
   font-weight: 500;
   color: var(--text-normal);
 }
 
-.discourse-sync-modal select {
+/* 输入框和选择器样式 */
+.discourse-sync-modal select,
+.discourse-sync-modal .tag-select-area {
   width: 100%;
   padding: 8px 12px;
-  height: 42px;
-  line-height: 1.5;
   border: 2px solid var(--background-modifier-border);
   border-radius: 4px;
   background-color: var(--background-primary);
   color: var(--text-normal);
   font-size: 14px;
+  min-height: 42px;
+}
+
+.discourse-sync-modal select {
+  height: 42px;
+  line-height: 1.5;
 }
 
 .discourse-sync-modal select:focus {
@@ -141,3 +170,169 @@ If your plugin does not need CSS, delete this file.
   background-color: rgb(255, 82, 82);
   color: white;
 }
+
+/* 标签选择区域样式 */
+.discourse-sync-modal .tag-select-area {
+  padding: 8px;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  position: relative;
+}
+
+.discourse-sync-modal .selected-tags {
+  display: none;  /* 默认隐藏 */
+  flex-wrap: wrap;
+  gap: 6px;
+  margin-bottom: 8px;
+  min-height: 28px;
+}
+
+.discourse-sync-modal .selected-tags:not(:empty) {
+  display: flex;  /* 当有内容时显示 */
+}
+
+.discourse-sync-modal .tag {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  padding: 4px 8px;
+  background-color: var(--interactive-accent);
+  color: var(--text-on-accent);
+  border-radius: 4px;
+  font-size: 12px;
+  font-weight: 500;
+}
+
+.discourse-sync-modal .remove-tag {
+  cursor: pointer;
+  font-size: 14px;
+  width: 16px;
+  height: 16px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: 50%;
+  background-color: rgba(255, 255, 255, 0.2);
+  margin-left: 4px;
+}
+
+.discourse-sync-modal .remove-tag:hover {
+  background-color: rgba(255, 255, 255, 0.3);
+}
+
+.discourse-sync-modal input[type="text"] {
+  width: 100%;
+  padding: 8px;
+  border: none;
+  background: transparent;
+  color: var(--text-normal);
+  font-size: 14px;
+  outline: none;
+}
+
+.discourse-sync-modal .suggestions-container {
+  max-height: 250px;
+  overflow-y: auto;
+  border-bottom: 1px solid var(--background-modifier-border);
+}
+
+/* 标签输入容器 */
+.discourse-sync-modal .tag-input-container {
+  position: relative;
+  width: 100%;
+}
+
+/* 标签建议下拉框 */
+.discourse-sync-modal .tag-suggestions {
+  position: fixed;
+  background-color: var(--background-primary);
+  border: 1px solid var(--background-modifier-border);
+  border-radius: 4px;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+  z-index: 1001;
+  max-height: 180px;
+  overflow-y: auto;
+  margin-top: 4px;
+  display: none;  /* 默认隐藏 */
+}
+
+.discourse-sync-modal .tag-suggestions:not(:empty) {
+  display: block;  /* 当有内容时显示 */
+}
+
+/* 标签建议项 */
+.discourse-sync-modal .tag-suggestion {
+  padding: 8px 12px;
+  cursor: pointer;
+  color: var(--text-normal);
+  font-size: 14px;
+  display: flex;
+  align-items: center;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  background-color: var(--background-primary);
+}
+
+.discourse-sync-modal .tag-suggestion:hover {
+  background-color: var(--background-modifier-hover);
+}
+
+/* 美化滚动条 */
+.discourse-sync-modal .tag-suggestions::-webkit-scrollbar {
+  width: 4px;
+}
+
+.discourse-sync-modal .tag-suggestions::-webkit-scrollbar-track {
+  background: transparent;
+}
+
+.discourse-sync-modal .tag-suggestions::-webkit-scrollbar-thumb {
+  background-color: var(--background-modifier-border);
+  border-radius: 2px;
+}
+
+.discourse-sync-modal .tag-suggestions::-webkit-scrollbar-thumb:hover {
+  background-color: var(--background-modifier-border-hover);
+}
+
+/* 移除 tag-container 的 z-index，避免干扰 */
+.discourse-sync-modal .tag-container {
+  position: relative;
+}
+
+.discourse-sync-modal .tag-notice {
+  position: fixed;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  padding: 12px 20px;
+  background-color: rgb(255, 235, 235);
+  border: 1px solid rgba(255, 82, 82, 0.2);
+  color: rgb(255, 82, 82);
+  border-radius: 4px;
+  font-size: 13px;
+  text-align: center;
+  z-index: 1002;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
+  max-width: 80%;
+  white-space: nowrap;
+  opacity: 0;
+  animation: fadeInOut 2s ease-in-out forwards;
+}
+
+@keyframes fadeInOut {
+  0% {
+    opacity: 0;
+  }
+  10% {
+    opacity: 1;
+  }
+  90% {
+    opacity: 1;
+  }
+  100% {
+    opacity: 0;
+  }
+}