diff --git a/manifest.json b/manifest.json
index c28126d..ffaacaa 100644
--- a/manifest.json
+++ b/manifest.json
@@ -5,5 +5,5 @@
     "author": "lazyloong",
 
     "minAppVersion": "1.0.0",
-    "version": "2.9.1"
+    "version": "2.10.1"
 }
diff --git a/src/fuzzyFileModal.ts b/src/fuzzyFileModal.ts
index 5041fe0..236b17f 100644
--- a/src/fuzzyFileModal.ts
+++ b/src/fuzzyFileModal.ts
@@ -149,7 +149,7 @@ export default class FuzzyFileModal extends FuzzyModal<Item> {
             node = node.next;
             if (_f) index++;
         }
-        let smathCase = /[A-Z]/.test(query),
+        let smathCase = /[A-Z]/.test(query) && this.plugin.settings.global.autoCaseSensitivity,
             indexNode = this.historyMatchData.index(index - 1),
             toMatchData = indexNode.itemIndex.length == 0 ? this.index.items : indexNode.itemIndex;
         for (let p of toMatchData) {
@@ -160,7 +160,7 @@ export default class FuzzyFileModal extends FuzzyModal<Item> {
         if (this.plugin.settings.file.usePathToSearch && matchData1.length <= 10) {
             toMatchData = indexNode.itemIndexByPath.length == 0 ? this.index.items : indexNode.itemIndexByPath;
             for (let p of toMatchData.filter((p) => p.type == "file" && !matchData1.map((p) => p.item.path).includes(p.path))) {
-                let d = <MatchData>p.pinyinOfPath.match(query, p);
+                let d = <MatchData>p.pinyinOfPath.match(query, p, smathCase);
                 if (d) {
                     d.usePath = true;
                     matchData2.push(d);
@@ -316,18 +316,13 @@ class PinyinIndex extends PI<Item> {
         }
     }
     initEvent() {
-        this.registerEvent(
-            this.metadataCache.on("changed", (file, data, cache) => {
-                this.update("changed", file, { data, cache });
-            })
-        );
+        this.registerEvent(this.metadataCache.on("changed", (file, data, cache) => this.update("changed", file, { data, cache })));
         this.registerEvent(this.vault.on("rename", (file, oldPath) => this.update("rename", file, { oldPath })));
         this.registerEvent(this.vault.on("create", (file) => this.update("create", file)));
         this.registerEvent(this.vault.on("delete", (file) => this.update("delete", file)));
     }
-    update(type: string, f: TAbstractFile, keys?: { oldPath?: string; data?: string; cache?: CachedMetadata }) {
-        if (!this.isEffectiveFile(f)) return;
-        let file = f as TFile;
+    update(type: string, file: TAbstractFile, keys?: { oldPath?: string; data?: string; cache?: CachedMetadata }) {
+        if (!this.isEffectiveFile(file)) return;
         switch (type) {
             case "changed": {
                 this.items = this.items
@@ -353,7 +348,7 @@ class PinyinIndex extends PI<Item> {
         }
     }
 
-    isEffectiveFile(file: TAbstractFile) {
+    isEffectiveFile(file: TAbstractFile): file is TFile {
         if (!(file instanceof TFile)) return false;
 
         if (this.plugin.settings.file.showAllFileTypes) return true;
diff --git a/src/fuzzyModal.ts b/src/fuzzyModal.ts
index e6dd3ec..b80e962 100644
--- a/src/fuzzyModal.ts
+++ b/src/fuzzyModal.ts
@@ -61,7 +61,7 @@ export default abstract class FuzzyModal<T extends Item> extends SuggestModal<Ma
             node = node.next;
             if (_f) index++;
         }
-        let smathCase = /[A-Z]/.test(query),
+        let smathCase = /[A-Z]/.test(query) && this.plugin.settings.global.autoCaseSensitivity,
             indexNode = this.historyMatchData.index(index - 1),
             toMatchData = indexNode.itemIndex.length == 0 ? this.index.items : indexNode.itemIndex;
         for (let p of toMatchData) {
diff --git a/src/main.ts b/src/main.ts
index 3c9cf0a..9820e0b 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -19,6 +19,7 @@ interface FuzyyChinesePinyinSettings {
         traditionalChineseSupport: boolean;
         doublePinyin: string;
         closeWithBackspace: boolean;
+        autoCaseSensitivity: boolean,
     };
     file: {
         showAllFileTypes: boolean;
@@ -41,6 +42,7 @@ const DEFAULT_SETTINGS: FuzyyChinesePinyinSettings = {
         traditionalChineseSupport: false,
         doublePinyin: "全拼",
         closeWithBackspace: false,
+        autoCaseSensitivity: true,
     },
     file: {
         showAttachments: false,
@@ -254,6 +256,12 @@ class SettingTab extends PluginSettingTab {
                     await this.plugin.saveSettings();
                 })
         );
+        new Setting(containerEl).setName("自动大小写敏感").addToggle((text) => {
+            text.setValue(this.plugin.settings.global.autoCaseSensitivity).onChange(async (value) => {
+                this.plugin.settings.global.autoCaseSensitivity = value;
+                await this.plugin.saveSettings();
+            });
+        });
         containerEl.createEl("h2", { text: "文件搜索" });
         new Setting(containerEl)
             .setName("显示附件")
diff --git a/src/search.ts b/src/search.ts
index 67bb56e..de04a36 100644
--- a/src/search.ts
+++ b/src/search.ts
@@ -6,14 +6,14 @@ export function fuzzyPinyinSearch(query: string, items: string[] | Item[], plugi
     if (isStringArray(items)) {
         items = stringArray2Items(items, plugin);
     }
-    return search(query, items);
+    return search(query, items, plugin.settings.global.autoCaseSensitivity);
 }
 
 function isStringArray(arr: string[] | Item[]): arr is string[] {
     return typeof arr[0] == "string";
 }
 
-function search(query: string, items: Item[]): MatchData<Item>[] {
+function search(query: string, items: Item[], autoCaseSensitivity = true): MatchData<Item>[] {
     if (query == "") {
         return items.map((p) => ({
             item: p,
@@ -23,7 +23,7 @@ function search(query: string, items: Item[]): MatchData<Item>[] {
     }
 
     let matchData: MatchData<Item>[] = [];
-    let smathCase = /[A-Z]/.test(query);
+    let smathCase = /[A-Z]/.test(query) && autoCaseSensitivity;
     for (let p of items) {
         let d = p.pinyin.match(query, p, smathCase);
         if (d) matchData.push(d);
diff --git a/src/tagEditorSuggest.ts b/src/tagEditorSuggest.ts
index 805c3cd..d83b8ac 100644
--- a/src/tagEditorSuggest.ts
+++ b/src/tagEditorSuggest.ts
@@ -85,7 +85,7 @@ export default class TagEditorSuggest extends EditorSuggest<MatchData<Item>> {
             node = node.next;
             if (_f) index++;
         }
-        let smathCase = /[A-Z]/.test(query),
+        let smathCase = /[A-Z]/.test(query) && this.plugin.settings.global.autoCaseSensitivity,
             indexNode = this.historyMatchData.index(index - 1),
             toMatchData = indexNode.itemIndex.length == 0 ? this.index.items : indexNode.itemIndex;
         for (let p of toMatchData) {