diff --git a/src/client/accessor/util.ts b/src/client/accessor/util.ts
index f9bd1ad..61c66f8 100644
--- a/src/client/accessor/util.ts
+++ b/src/client/accessor/util.ts
@@ -11,8 +11,8 @@ export const toQueryString = (obj:ToQueryStringA)=> {
                 e[1] !== undefined)
         .map(e => 
         e[1] instanceof Array 
-            ? e[1].map(f=>`${e[0]}[]=${encodeURIComponent(f)}`).join('&') 
-            : `${e[0]}=${encodeURIComponent(e[1])}`)
+            ? e[1].map(f=>`${e[0]}=${(f)}`).join('&') 
+            : `${e[0]}=${(e[1])}`)
         .join('&');
 }
 export const QueryStringToMap = (query:string) =>{
@@ -20,16 +20,16 @@ export const QueryStringToMap = (query:string) =>{
     const param:{[k:string]:string|string[]} = {};
     keyValue.forEach((p)=>{
         const [k,v] = p.split("=");
-        if(k.endsWith("[]")){
-            let arr = param[k];
-            if(arr instanceof Array){
-                arr.push(v);
-            }
-            else{
-                param[k] = [v];
-            }
+        const pv = param[k];
+        if(pv === undefined){
+            param[k] = v;
+        }
+        else if(typeof pv === "string"){
+            param[k] = [pv,v];
+        }
+        else{
+            pv.push(v);
         }
-        else param[k] = v;
     });
     return param;
 }
\ No newline at end of file
diff --git a/src/client/component/contentinfo.tsx b/src/client/component/contentinfo.tsx
index de8452a..a88c61f 100644
--- a/src/client/component/contentinfo.tsx
+++ b/src/client/component/contentinfo.tsx
@@ -117,7 +117,7 @@ export const ContentInfo = (props: {
             </Link>
             <Box className={propclasses.subinfoContainer || subinfoContainer}>
                 {props.short ? (<Box className={propclasses.tag_list || classes.tag_list}>{document.tags.map(x => 
-                                (<TagChip key={x} label={x} clickable={true} tagname={x} size="small"></TagChip>)
+                                (<TagChip key={x} label={x} clickable tagname={x} size="small"></TagChip>)
                             )}</Box>) : (
                     <>
                         <Typography variant='subtitle1'>Artist</Typography>
@@ -125,7 +125,7 @@ export const ContentInfo = (props: {
                         <Typography variant='subtitle1'>Tags</Typography>
                         <Box className={propclasses.tag_list || classes.tag_list}>
                             {allTag.map(x => {
-                                return (<TagChip key={x} label={x} clickable={true} tagname={x} size="small"></TagChip>);
+                                return (<TagChip key={x} label={x} clickable tagname={x} size="small"></TagChip>);
                             })}
                         </Box>
                     </>)
diff --git a/src/client/component/tagchip.tsx b/src/client/component/tagchip.tsx
index 62094ab..f2cd2cf 100644
--- a/src/client/component/tagchip.tsx
+++ b/src/client/component/tagchip.tsx
@@ -1,7 +1,8 @@
 import React from 'react';
-import {ChipProps} from '@material-ui/core/Chip';
+import {ChipTypeMap} from '@material-ui/core/Chip';
 import { Chip, colors } from '@material-ui/core';
 import {useTheme, makeStyles, Theme, emphasize, fade} from '@material-ui/core/styles';
+import {Link as RouterLink} from 'react-router-dom';
 
 type TagChipStyleProp = {
     color: string
@@ -43,14 +44,20 @@ const useTagStyles = makeStyles((theme:Theme)=>({
 const {blue, pink} = colors;
 const getTagColorName = (tagname :string):string=>{
     if(tagname.startsWith("female")){
-        return pink['700'];
+        return pink[600];
     }
     else if(tagname.startsWith("male")){
         return blue[600];
     }
     else return "default";
 }
-export const ColorChip = (props:Omit<ChipProps,"color"> & {color: string})=>{
+
+type ColorChipProp = Omit<ChipTypeMap['props'],"color"> & TagChipStyleProp & {
+    component?: React.ElementType,
+    to?: string
+}
+
+export const ColorChip = (props:ColorChipProp)=>{
     const {color,...rest} = props;
     const classes = useTagStyles({color : color !== "default" ? color : "#000"});
     return <Chip color="default" classes={{
@@ -58,8 +65,12 @@ export const ColorChip = (props:Omit<ChipProps,"color"> & {color: string})=>{
     }} {...rest}></Chip>;
 }
 
-export const TagChip = (props:Omit<ChipProps,"color"> & {tagname: string})=>{
-    const {tagname,label,...rest} = props;
+type TagChipProp = Omit<ChipTypeMap['props'],"color"> & {
+    tagname:string
+}
+
+export const TagChip = (props:TagChipProp)=>{
+    const {tagname,label,clickable,...rest} = props;
     let newlabel:string|undefined = undefined;
     if(typeof label === "string"){
         if(label.startsWith("female:")){
@@ -69,5 +80,9 @@ export const TagChip = (props:Omit<ChipProps,"color"> & {tagname: string})=>{
             newlabel = "♂ "+label.slice(5);
         }
     }
-    return <ColorChip color={getTagColorName(tagname)} label={newlabel||label} {...rest}></ColorChip>;
+    const inner = clickable ? 
+    (<ColorChip color={getTagColorName(tagname)} clickable={clickable} label={newlabel||label} {...rest} 
+    component={RouterLink} to={`/search?allow_tag=${tagname}`}></ColorChip>):
+    (<ColorChip color={getTagColorName(tagname)} clickable={clickable} label={newlabel||label} {...rest}></ColorChip>);
+    return inner;
 }
\ No newline at end of file
diff --git a/src/db/doc.ts b/src/db/doc.ts
index d60ea47..4448352 100644
--- a/src/db/doc.ts
+++ b/src/db/doc.ts
@@ -80,12 +80,16 @@ class KnexDocumentAccessor implements DocumentAccessor{
         const cursor = option.cursor;
 
         const buildquery = ()=>{
-            let query = this.knex.select("*");
+            let query = this.knex.select("document.*");
             if(allow_tag.length > 0){
-                query = query.from("doc_tag_relation").innerJoin("document","doc_tag_relation.doc_id","document.id");
-                for(const tag of allow_tag){
-                    query = query.where({tag_name:tag});
+                query = query.from("doc_tag_relation as tags_0");
+                query = query.where("tags_0.tag_name","=",allow_tag[0]);
+                for (let index = 1; index < allow_tag.length; index++) {
+                    const element = allow_tag[index];
+                    query = query.innerJoin(`doc_tag_relation as tags_${index}`,`tags_${index}.doc_id`,"tags_0.doc_id");
+                    query = query.where(`tags_${index}.tag_name`,'=',element);
                 }
+                query = query.innerJoin("document","tags_0.doc_id","document.id");
             }
             else{
                 query = query.from("document");
diff --git a/src/route/contents.ts b/src/route/contents.ts
index 7561f4a..43a8bb7 100644
--- a/src/route/contents.ts
+++ b/src/route/contents.ts
@@ -2,7 +2,7 @@ import { Context, Next } from 'koa';
 import Router from 'koa-router';
 import {Document, DocumentAccessor, isDocBody} from '../model/doc';
 import {QueryListOption} from '../model/doc';
-import {ParseQueryNumber, ParseQueryArray, ParseQueryBoolean} from './util'
+import {ParseQueryNumber, ParseQueryArray, ParseQueryBoolean, ParseQueryArgString} from './util'
 import {sendError} from './error_handler';
 import { join } from 'path';
 import {AllContentRouter} from './all';
@@ -31,14 +31,14 @@ const ContentTagIDHandler = (controller: DocumentAccessor) => async (ctx: Contex
 const ContentQueryHandler = (controller : DocumentAccessor) => async (ctx: Context,next: Next)=>{
     const limit = ParseQueryNumber(ctx.query['limit']);
     const cursor = ParseQueryNumber(ctx.query['cursor']);
-    const word: string|undefined = ctx.query['word'];
-    const content_type:string|undefined = ctx.query['content_type'];
+    const word = ParseQueryArgString(ctx.query['word']);
+    const content_type = ParseQueryArgString(ctx.query['content_type']);
     const offset = ParseQueryNumber(ctx.query['offset']);
     if(limit === NaN || cursor === NaN || offset === NaN){
         return sendError(400,"parameter limit, cursor or offset is not a number");
     }
-    const allow_tag = ParseQueryArray(ctx.query['allow_tag[]']);
-    let [ok,use_offset] = ParseQueryBoolean(ctx.query['use_offset']);
+    const allow_tag = ParseQueryArray(ctx.query['allow_tag']);
+    const [ok,use_offset] = ParseQueryBoolean(ctx.query['use_offset']);
     if(!ok){
         return sendError(400,"use_offset must be true or false.");
     }
@@ -50,7 +50,7 @@ const ContentQueryHandler = (controller : DocumentAccessor) => async (ctx: Conte
         eager_loading: true,
         offset: offset,
         use_offset: use_offset,
-        content_type:content_type,
+        content_type: content_type,
     };
     let document = await controller.findList(option);
     ctx.body = document;
diff --git a/src/route/util.ts b/src/route/util.ts
index 9e4892e..a7aa7e3 100644
--- a/src/route/util.ts
+++ b/src/route/util.ts
@@ -8,7 +8,11 @@ export function ParseQueryNumber(s: string|undefined): number| undefined{
 }
 export function ParseQueryArray(s: string[]|string|undefined){
     s = s || [];
-    return s instanceof Array ? s : [s];
+    const r = s instanceof Array ? s : [s];
+    return r.map(x=>decodeURIComponent(x));
+}
+export function ParseQueryArgString(s: string|undefined){
+    return s === undefined ? s : decodeURIComponent(s);
 }
 export function ParseQueryBoolean(s: string|undefined): [boolean,boolean|undefined]{
     let value:boolean|undefined;