1. A method for application icon management in a mobile terminal, comprising steps of: presetting information on a class to which an application belongs, and establishing a table of mapping relation among a class of applications, a screen, and an application; receiving an object moving instruction, acquiring information on a rule graph corresponding to an object to be moved according to the object moving instruction, and displaying the information on the rule graph; and updating, after successfully moving the object to be moved to an area on the rule graph, a table of mapping relation among a class of applications, a screen, and an application according to the move.