Method and System for Marking a Phone Number

A method for marking a phone number and a system for marking a phone number are provided. Said method comprises: obtaining a phone number of an incoming call or a dialed call to/from a mobile terminal; performing matching process on the obtained phone number in at least one of a local database and a cloud database; based on whether or not said phone number is successfully matched in the local database or the cloud database and whether said phone number is a questioned number, displaying the user with different marking pages, to prompt the user to mark said phone number or confirm the marking information of said phone number; obtaining the marking information marked by the user to said phone number according to the marking page, and performing marking verification process on the marking information; and according to the result of the marking verification process, updating said cloud database and said local database.