A method for curing a virus of data used in a mobile terminal communicating with a server through a mobile communication network is provided. The method includes forming an antivirus program database on the server and continuously updating the database with antivirus programs; comparing state information of object data requiring virus checking by the updated antivirus programs among existing data stored in the mobile terminal with state information of the updated antivirus programs; and checking and curing the virus of the object data selectively.