A method for processing an application is applied to a terminal including a main space occupied by a main system and a clone space occupied by a clone system. The method includes: acquiring a cross-space processing instruction sent by a first system in a first space is acquired; and performing corresponding processing on a target application in a second space based on the cross-space processing instruction, wherein the first space is the main space and the second space is the clone space, or the first space is the clone space and the second space is the main space.