diff --git a/crates/swc_bundler/examples/bundle.rs b/crates/swc_bundler/examples/bundle.rs
index e5db4f8a507..e93faa74081 100644
--- a/crates/swc_bundler/examples/bundle.rs
+++ b/crates/swc_bundler/examples/bundle.rs
@@ -86,6 +86,7 @@ fn do_test(_entry: &Path, entries: HashMap<String, FileName>, inline: bool, mini
                 external_modules: Default::default(),
                 disable_fixer: minify,
                 disable_hygiene: minify,
+                disable_dce: false,
                 module: Default::default(),
             },
             Box::new(Hook),
diff --git a/crates/swc_bundler/src/bundler/mod.rs b/crates/swc_bundler/src/bundler/mod.rs
index 14c3b9bd9c8..ea926685e92 100644
--- a/crates/swc_bundler/src/bundler/mod.rs
+++ b/crates/swc_bundler/src/bundler/mod.rs
@@ -36,6 +36,9 @@ pub struct Config {
 
     pub disable_fixer: bool,
 
+    /// Disable tree-shaking optimization.
+    pub disable_dce: bool,
+
     /// List of modules which should be preserved.
     pub external_modules: Vec<JsWord>,
 
diff --git a/crates/swc_bundler/src/bundler/optimize.rs b/crates/swc_bundler/src/bundler/optimize.rs
index c729a1f9adb..95481ce7fb6 100644
--- a/crates/swc_bundler/src/bundler/optimize.rs
+++ b/crates/swc_bundler/src/bundler/optimize.rs
@@ -18,12 +18,12 @@ where
             if !self.config.disable_inliner {
                 node = node.fold_with(&mut constant_propagation())
             }
-
-            node = node.fold_with(&mut Repeat::new(dce::dce(dce::Config {
-                // TODO(kdy1): Apply mark to wrapped esms and use it at here.
-                module_mark: None,
-            })));
-
+            if !self.config.disable_dce {
+                node = node.fold_with(&mut Repeat::new(dce::dce(dce::Config {
+                    // TODO(kdy1): Apply mark to wrapped esms and use it at here.
+                    module_mark: None,
+                })));
+            }
             node
         })
     }
diff --git a/crates/swc_bundler/src/bundler/tests.rs b/crates/swc_bundler/src/bundler/tests.rs
index db0c87ed96c..f9f5a6af2c6 100644
--- a/crates/swc_bundler/src/bundler/tests.rs
+++ b/crates/swc_bundler/src/bundler/tests.rs
@@ -134,6 +134,7 @@ impl TestBuilder {
                         disable_inliner: true,
                         disable_hygiene: false,
                         disable_fixer: false,
+                        disable_dce: false,
                         external_modules: vec![],
                         module: Default::default(),
                     },