diff --git a/tools/deployment/onnx2tensorrt.py b/tools/deployment/onnx2tensorrt.py
index e3e9b57d2b4..b59e52ae199 100644
--- a/tools/deployment/onnx2tensorrt.py
+++ b/tools/deployment/onnx2tensorrt.py
@@ -252,3 +252,15 @@ def parse_shape(shape):
         show=args.show,
         workspace_size=args.workspace_size,
         verbose=args.verbose)
+
+    # Following strings of text style are from colorama package
+    bright_style, reset_style = '\x1b[1m', '\x1b[0m'
+    red_text, blue_text = '\x1b[31m', '\x1b[34m'
+    white_background = '\x1b[107m'
+
+    msg = white_background + bright_style + red_text
+    msg += 'DeprecationWarning: This tool will be deprecated in future. '
+    msg += blue_text + 'Welcome to use the unified model deployment toolbox '
+    msg += 'MMDeploy: https://github.com/open-mmlab/mmdeploy'
+    msg += reset_style
+    warnings.warn(msg)
diff --git a/tools/deployment/pytorch2onnx.py b/tools/deployment/pytorch2onnx.py
index c1789b442a7..5c786f8540e 100644
--- a/tools/deployment/pytorch2onnx.py
+++ b/tools/deployment/pytorch2onnx.py
@@ -343,3 +343,15 @@ def parse_args():
         do_simplify=args.simplify,
         dynamic_export=args.dynamic_export,
         skip_postprocess=args.skip_postprocess)
+
+    # Following strings of text style are from colorama package
+    bright_style, reset_style = '\x1b[1m', '\x1b[0m'
+    red_text, blue_text = '\x1b[31m', '\x1b[34m'
+    white_background = '\x1b[107m'
+
+    msg = white_background + bright_style + red_text
+    msg += 'DeprecationWarning: This tool will be deprecated in future. '
+    msg += blue_text + 'Welcome to use the unified model deployment toolbox '
+    msg += 'MMDeploy: https://github.com/open-mmlab/mmdeploy'
+    msg += reset_style
+    warnings.warn(msg)
diff --git a/tools/deployment/test.py b/tools/deployment/test.py
index b32b77332e5..afbad176841 100644
--- a/tools/deployment/test.py
+++ b/tools/deployment/test.py
@@ -1,5 +1,6 @@
 # Copyright (c) OpenMMLab. All rights reserved.
 import argparse
+import warnings
 
 import mmcv
 from mmcv import Config, DictAction
@@ -140,4 +141,16 @@ def main():
 
 
 if __name__ == '__main__':
-    main()
+    # main()
+
+    # Following strings of text style are from colorama package
+    bright_style, reset_style = '\x1b[1m', '\x1b[0m'
+    red_text, blue_text = '\x1b[31m', '\x1b[34m'
+    white_background = '\x1b[107m'
+
+    msg = white_background + bright_style + red_text
+    msg += 'DeprecationWarning: This tool will be deprecated in future. '
+    msg += blue_text + 'Welcome to use the unified model deployment toolbox '
+    msg += 'MMDeploy: https://github.com/open-mmlab/mmdeploy'
+    msg += reset_style
+    warnings.warn(msg)