diff --git a/.gitignore b/.gitignore
index 79ce2f5..dbc0b31 100644
--- a/.gitignore
+++ b/.gitignore
@@ -110,3 +110,4 @@ Network Trash Folder
 Temporary Items
 .apdisk
 **/temp/
+.build
\ No newline at end of file
diff --git a/bin/library.js b/bin/library.js
index 36b3ad9..c8cd079 100644
--- a/bin/library.js
+++ b/bin/library.js
@@ -1,5 +1,5 @@
 import {$, fetch, fs, glob, os, path, spinner, syncProcessCwd, usePowerShell} from 'zx'
-import {isEqual, trim, fileSize} from "licia";
+import {fileSize, isEqual, trim} from "licia";
 import md5file from 'md5-file'
 
 syncProcessCwd(true)
@@ -41,7 +41,38 @@ const millisecondToString = (timestamp) => {
     return parts.join('')
 }
 
+const projectRootPath = () => path.dirname(import.meta.dirname)
+
+export const isModified = async (target) => {
+    if (!target || !(await fs.exists(target))) {
+        throw new Error("Target 不存在")
+    }
+    let stat = fs.statSync(target)
+    let currentModifiedTime = stat.mtimeMs
+
+    let buildPath = `${projectRootPath()}/.build`
+    if (!(await fs.exists(buildPath))) {
+        fs.mkdirSync(buildPath, {recursive: true})
+    }
+    let modifiedTimeDataPath = `${buildPath}/modified_time.json`
+    if (!(await fs.exists(modifiedTimeDataPath))) {
+        fs.writeFileSync(modifiedTimeDataPath, '{}')
+    }
+    let modifiedTimeData = JSON.parse(await fs.readFile(modifiedTimeDataPath, 'utf-8'))
+    let lastModifiedTime = modifiedTimeData[target]
+    if (lastModifiedTime && isEqual(currentModifiedTime, lastModifiedTime)) {
+        return false
+    }
+    modifiedTimeData[target] = currentModifiedTime
+    fs.writeFileSync(modifiedTimeDataPath, JSON.stringify(modifiedTimeData, null, 2))
+    return true
+}
+
 export const run_deploy = async (project) => {
+    if (!(await isModified(`${projectRootPath()}/${project}`))) {
+        console.log(`✅  Skip deploy ${project}`)
+        return
+    }
     let output = await spinner(
         `Deploying project ${project}`,
         () => $`mvn -pl ${project} clean deploy -D skipTests -s ${maven_setting}`
@@ -50,6 +81,10 @@ export const run_deploy = async (project) => {
 }
 
 export const run_deploy_root = async () => {
+    if (!(await isModified(`${projectRootPath()}/pom.xml`))) {
+        console.log(`✅  Skip deploy root`)
+        return
+    }
     let output = await spinner(
         `Deploying root`,
         () => $`mvn clean deploy -N -D skipTests -s ${maven_setting}`
diff --git a/bin/test.js b/bin/test.js
new file mode 100644
index 0000000..329db90
--- /dev/null
+++ b/bin/test.js
@@ -0,0 +1,3 @@
+import {isModified} from './library.js'
+
+console.log(await isModified('/Users/lanyuanxiaoyao/Project/IdeaProjects/hudi-service/pom.xml'))
\ No newline at end of file