diff --git a/src/Common.js b/src/Common.js
index 672cc51..49a4793 100644
--- a/src/Common.js
+++ b/src/Common.js
@@ -94,7 +94,7 @@ function is_audio(s) {
 export function build_highlight_re(
   txt,
   split = ' ',
-  option = 'g',
+  option = 'gi',
   isRegex = false,
 ) {
   if (isRegex) {
@@ -228,7 +228,7 @@ export class HighlightedMarkdown extends Component {
               try {
                 search_re = new RegExp(
                   `(${props.search_param.slice(1, -1)})`,
-                  'g',
+                  'gi',
                 );
               } catch (e) {}
             } else {
@@ -240,7 +240,7 @@ export class HighlightedMarkdown extends Component {
                   `(${search_kws
                     .map((s) => s.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'))
                     .join('|')})`,
-                  'g',
+                  'gi',
                 );
               }
             }
diff --git a/src/Flows.js b/src/Flows.js
index 9ece458..108d604 100644
--- a/src/Flows.js
+++ b/src/Flows.js
@@ -1649,7 +1649,10 @@ class SubFlow extends PureComponent {
         let regex_search = /.+/;
         if (use_regex) {
           try {
-            regex_search = new RegExp(this.state.search_param.slice(1, -1));
+            regex_search = new RegExp(
+              this.state.search_param.slice(1, -1),
+              'i',
+            );
           } catch (e) {
             alert(`请检查正则表达式合法性！\n${e}`);
             regex_search = /.+/;
@@ -1673,10 +1676,11 @@ class SubFlow extends PureComponent {
                     ? json.data
                     : !use_regex
                     ? json.data.filter((post) => {
+                        const search_text = get_search_text(post).toLowerCase();
                         return this.state.search_param
                           .split(' ')
                           .every((keyword) =>
-                            get_search_text(post).includes(keyword),
+                            search_text.includes(keyword.toLowerCase()),
                           );
                       }) // Not using regex
                     : json.data.filter(
@@ -1730,10 +1734,12 @@ class SubFlow extends PureComponent {
                         ? json.data
                         : !use_regex
                         ? json.data.filter((post) => {
+                            const search_text =
+                              get_search_text(post).toLowerCase();
                             return this.state.search_param
                               .split(' ')
                               .every((keyword) =>
-                                get_search_text(post).includes(keyword),
+                                search_text.includes(keyword.toLowerCase()),
                               );
                           })
                         : json.data.filter(