diff --git a/packages/core/src/command.tsx b/packages/core/src/command.tsx
new file mode 100644
index 000000000..ab9b5c1c4
--- /dev/null
+++ b/packages/core/src/command.tsx
@@ -0,0 +1,104 @@
+import { Context, Session } from "koishi"
+import { Config, OutputType, SpoilerType } from "."
+
+export const inject = {
+  required: ['booru'],
+  optional: ['assets'],
+}
+
+export function apply(ctx: Context, config: Config) {
+
+  const count = (value: string, session: Session) => {
+    const count = parseInt(value)
+    if (count < 1 || count > config.maxCount) {
+      session.send('booru.count-invalid')
+      return 1
+    }
+    return count
+  }
+
+  ctx
+    .command('booru <query:text>')
+    .option('count', '-c <count:number>', { type: count, fallback: 1 })
+    .option('label', '-l <label:string>')
+    .action(async ({ session, options }, query) => {
+      if (!ctx.booru.hasSource(options.label)) return session.text('.no-source')
+
+      query = query?.trim() ?? ''
+
+      const images = await ctx.booru.get({
+        query,
+        count: options.count,
+        labels: options.label?.split(',')?.map((x) => x.trim())?.filter(Boolean) ?? [],
+      })
+      const source = images?.source
+
+      const filtered = images?.filter((image) => config.nsfw || !image.nsfw)
+
+      if (!filtered?.length) return session?.text('.no-result')
+
+      const output: Element[] = []
+
+      for (const image of filtered) {
+        if (config.asset && ctx.assets) {
+          image.url = await ctx.booru.imgUrlToAssetUrl(image)
+          if (!image.url) {
+            output.unshift(<i18n path=".no-image"></i18n>)
+            continue
+          }
+        }
+        if (config.base64) {
+          image.url = await ctx.booru.imgUrlToBase64(image)
+          if (!image.url) {
+            output.unshift(<i18n path=".no-image"></i18n>)
+            continue
+          }
+        }
+        switch (config.output) {
+          case OutputType.All:
+            if (image.tags)
+              output.unshift(<message>
+                <p><i18n path='.output.source'>{[source]}</i18n></p>
+                <p><i18n path='.output.tags'>{[image.tags.join(', ')]}</i18n></p>
+              </message>)
+          case OutputType.ImageAndLink:
+            if (image.pageUrl || image.authorUrl)
+              output.unshift(<message>
+                <p><i18n path='.output.link'>{[image.pageUrl]}</i18n></p>
+                <p><i18n path='.output.homepage'>{[image.authorUrl]}</i18n></p>
+              </message>)
+          case OutputType.ImageAndInfo:
+            if (image.title && image.author && image.desc)
+              output.unshift(<message>
+                <p>{image.title}</p>
+                <p><i18n path='.output.author'>{[image.author]}</i18n></p>
+                <p><i18n path='.output.desc'>{[image.desc]}</i18n></p>
+              </message>)
+          case OutputType.ImageOnly:
+            output.unshift(
+              /**
+               * @TODO waiting for upstream to support spoiler tag
+               * but is only is attribute, so it's can work now.
+               */
+              <message>
+                <image spoiler={(() => {
+                  switch (config.spoiler) {
+                    case SpoilerType.Disabled:
+                      return false
+                    case SpoilerType.All:
+                      return true
+                    case SpoilerType.OnlyNSFW:
+                      return Boolean(image.nsfw)
+                  }
+                })()} url={image.url}></image></message>
+            )
+        }
+      }
+      // the qq platform will can merge the all forward message with one element(forward message block).
+      // so can treat it as a spoiler message.
+      if (['qq', 'red', 'onebot'].includes(session.platform) && config.spoiler !== SpoilerType.Disabled)
+        return <message forward>{output}</message>
+      else
+        return output.length === 1 ? output[0] : <message forward>{output}</message>
+    })
+}
diff --git a/packages/core/src/index.tsx b/packages/core/src/index.ts
similarity index 61%
rename from packages/core/src/index.tsx
rename to packages/core/src/index.ts
index 33d3ed411..8de3bf2c0 100644
--- a/packages/core/src/index.tsx
+++ b/packages/core/src/index.ts
@@ -1,6 +1,7 @@
 import { Context, Element, Logger, Quester, Schema, Service, Session } from 'koishi'
 import LanguageDetect from 'languagedetect'
 import { ImageSource } from './source'
+import * as Command from './command'
 import { } from '@koishijs/assets'
 
 export * from './source'
@@ -169,107 +170,10 @@ export const Config = Schema.intersect([
   }).description('输出设置'),
 ])
 
-export const inject = {
-  required: [],
-  optional: ['assets'],
-}
 
 export function apply(ctx: Context, config: Config) {
   ctx.plugin(ImageService, config)
+  ctx.plugin(Command, config)
 
   ctx.i18n.define('zh', require('./locales/zh-CN'))
-
-  const count = (value: string, session: Session) => {
-    const count = parseInt(value)
-    if (count < 1 || count > config.maxCount) {
-      session.send('booru.count-invalid')
-      return 1
-    }
-    return count
-  }
-
-  ctx
-    .command('booru <query:text>')
-    .option('count', '-c <count:number>', { type: count, fallback: 1 })
-    .option('label', '-l <label:string>')
-    .action(async ({ session, options }, query) => {
-      if (!ctx.booru.hasSource(options.label)) return session.text('.no-source')
-
-      query = query?.trim() ?? ''
-
-      const images = await ctx.booru.get({
-        query,
-        count: options.count,
-        labels: options.label?.split(',')?.map((x) => x.trim())?.filter(Boolean) ?? [],
-      })
-      const source = images?.source
-
-      const filtered = images?.filter((image) => config.nsfw || !image.nsfw)
-
-      if (!filtered?.length) return session?.text('.no-result')
-
-      const output: Element[] = []
-
-      for (const image of filtered) {
-        if (config.asset && ctx.assets) {
-          image.url = await ctx.booru.imgUrlToAssetUrl(image)
-          if (!image.url) {
-            output.unshift(<i18n path=".no-image"></i18n>)
-            continue
-          }
-        }
-        if (config.base64) {
-          image.url = await ctx.booru.imgUrlToBase64(image)
-          if (!image.url) {
-            output.unshift(<i18n path=".no-image"></i18n>)
-            continue
-          }
-        }
-        switch (config.output) {
-          case OutputType.All:
-            if (image.tags)
-              output.unshift(<message>
-                <p><i18n path='.output.source'>{[source]}</i18n></p>
-                <p><i18n path='.output.tags'>{[image.tags.join(', ')]}</i18n></p>
-              </message>)
-          case OutputType.ImageAndLink:
-            if (image.pageUrl || image.authorUrl)
-              output.unshift(<message>
-                <p><i18n path='.output.link'>{[image.pageUrl]}</i18n></p>
-                <p><i18n path='.output.homepage'>{[image.authorUrl]}</i18n></p>
-              </message>)
-          case OutputType.ImageAndInfo:
-            if (image.title && image.author && image.desc)
-              output.unshift(<message>
-                <p>{image.title}</p>
-                <p><i18n path='.output.author'>{[image.author]}</i18n></p>
-                <p><i18n path='.output.desc'>{[image.desc]}</i18n></p>
-              </message>)
-          case OutputType.ImageOnly:
-            output.unshift(
-              /**
-               * @TODO waiting for upstream to support spoiler tag
-               * but is only is attribute, so it's can work now.
-               */
-              <message>
-                <image spoiler={(() => {
-                  switch (config.spoiler) {
-                    case SpoilerType.Disabled:
-                      return false
-                    case SpoilerType.All:
-                      return true
-                    case SpoilerType.OnlyNSFW:
-                      return Boolean(image.nsfw)
-                  }
-                })()} url={image.url}></image></message>
-            )
-        }
-      }
-      // the qq platform will can merge the all forward message with one element(forward message block).
-      // so can treat it as a spoiler message.
-      if (['qq', 'red', 'onebot'].includes(session.platform) && config.spoiler !== SpoilerType.Disabled)
-        return <message forward>{output}</message>
-      else
-        return output.length === 1 ? output[0] : <message forward>{output}</message>
-    })
 }