How To Backup Google Chrome Saved Passwords

Import and Export Saved Passwords In Google Chrome
First open My computer
Then open the local disk where windows operating system is located usually it is C:\ drive
If you are using windows XP follow this path , open explorer - Documents and Settings\{USERNAME}\Local Settings\Application Data\Google\Chrome\User Data\Default
If it is windows 7 or above - Users\{USERNAME}\AppData\Local\Google\Chrome\User Data\Default

Export

Now search for the file "Login Data"

This file contains your saved passwords. You can backup this file for further use.

Import 

Delete the file "Login Data"
Copy the backup file "Login Data" and paste here.