diff --git a/__tests__/get-inputs.test.ts b/__tests__/get-inputs.test.ts
index 7ff2590..10f11f5 100644
--- a/__tests__/get-inputs.test.ts
+++ b/__tests__/get-inputs.test.ts
@@ -56,6 +56,7 @@ function getInputsLog(authMethod: string, inps: Inputs): string {
 [INFO] EnableJekyll (DisableNoJekyll): ${inps.DisableNoJekyll}
 [INFO] CNAME: ${inps.CNAME}
 [INFO] ExcludeAssets ${inps.ExcludeAssets}
+[INFO] DryRun ${inps.DryRun}
 `;
 }
 
@@ -125,6 +126,7 @@ describe('getInputs()', () => {
     expect(inps.DisableNoJekyll).toBe(false);
     expect(inps.CNAME).toMatch('');
     expect(inps.ExcludeAssets).toMatch('.github');
+    expect(inps.DryRun).toBeFalsy();
   });
 
   test('get spec inputs', () => {
@@ -147,6 +149,7 @@ describe('getInputs()', () => {
     process.env['INPUT_DISABLE_NOJEKYLL'] = 'true';
     process.env['INPUT_CNAME'] = 'github.com';
     process.env['INPUT_EXCLUDE_ASSETS'] = '.github';
+    process.env['INPUT_DRY_RUN'] = 'true';
 
     const inps: Inputs = getInputs();
 
@@ -169,6 +172,7 @@ describe('getInputs()', () => {
     expect(inps.DisableNoJekyll).toBe(true);
     expect(inps.CNAME).toMatch('github.com');
     expect(inps.ExcludeAssets).toMatch('.github');
+    expect(inps.DryRun).toBeTruthy();
   });
 
   test('get spec inputs enable_jekyll', () => {
diff --git a/action.yml b/action.yml
index 175640d..5291cdb 100644
--- a/action.yml
+++ b/action.yml
@@ -77,3 +77,7 @@ inputs:
     description: 'Set files or directories to exclude from a publish directory.'
     required: false
     default: '.github'
+  dry_run:
+    description: 'Set true to run the action with dry run mode.'
+    required: false
+    default: 'false'
diff --git a/src/get-inputs.ts b/src/get-inputs.ts
index 1f70517..762d879 100644
--- a/src/get-inputs.ts
+++ b/src/get-inputs.ts
@@ -29,6 +29,7 @@ export function showInputs(inps: Inputs): void {
 [INFO] EnableJekyll (DisableNoJekyll): ${inps.DisableNoJekyll}
 [INFO] CNAME: ${inps.CNAME}
 [INFO] ExcludeAssets ${inps.ExcludeAssets}
+[INFO] DryRun ${inps.DryRun}
 `);
 }
 
@@ -67,7 +68,8 @@ export function getInputs(): Inputs {
     TagMessage: core.getInput('tag_message'),
     DisableNoJekyll: useBuiltinJekyll,
     CNAME: core.getInput('cname'),
-    ExcludeAssets: core.getInput('exclude_assets')
+    ExcludeAssets: core.getInput('exclude_assets'),
+    DryRun: (core.getInput('dry_run') || 'false').toUpperCase() === 'TRUE'
   };
 
   return inps;
diff --git a/src/interfaces.ts b/src/interfaces.ts
index d1a615d..b21e5dc 100644
--- a/src/interfaces.ts
+++ b/src/interfaces.ts
@@ -18,6 +18,7 @@ export interface Inputs {
   readonly DisableNoJekyll: boolean;
   readonly CNAME: string;
   readonly ExcludeAssets: string;
+  readonly DryRun: boolean;
 }
 
 export interface CmdResult {
diff --git a/src/main.ts b/src/main.ts
index 6ddf944..cb68f1f 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -79,8 +79,11 @@ export async function run(): Promise<void> {
     core.endGroup();
 
     core.startGroup('Push the commit or tag');
-    await push(inps.PublishBranch, inps.ForceOrphan);
-    await pushTag(inps.TagName, inps.TagMessage);
+    if (!inps.DryRun) {
+      core.info(`[INFO] dry run mode, skip pushing`);
+      await push(inps.PublishBranch, inps.ForceOrphan);
+      await pushTag(inps.TagName, inps.TagMessage);
+    }
     core.endGroup();
 
     core.info('[INFO] Action successfully completed');