diff --git a/tools/btaddon/hc06_console_AT.py b/tools/btaddon/hc06_console_AT.py
index 6520aa9aa..4b0d7fd96 100755
--- a/tools/btaddon/hc06_console_AT.py
+++ b/tools/btaddon/hc06_console_AT.py
@@ -2,7 +2,11 @@
 
 import sys
 import time
-import serial
+try:
+    import serial
+except ModuleNotFoundError:
+    print("Please install pyserial module first.")
+    sys.exit(1)
 
 if len(sys.argv) < 2:
     print('Usage: %s <baudrate>' % sys.argv[0])
diff --git a/tools/btaddon/hc06_factory.py b/tools/btaddon/hc06_factory.py
index f6d0f25b2..093f25322 100755
--- a/tools/btaddon/hc06_factory.py
+++ b/tools/btaddon/hc06_factory.py
@@ -1,7 +1,13 @@
 #!/usr/bin/env python3
 
 import time
-import serial
+import sys
+
+try:
+    import serial
+except ModuleNotFoundError:
+    print("Please install pyserial module first.")
+    sys.exit(1)
 
 name = b'PM3_RDV4.0'
 pin  = b'1234'