The invention provides an object processing method, which comprises the following steps that: obtaining at least one object which is loaded into memory; determining the number of citation of at leastone object, wherein the number of citation is used for presenting the number that at least one object is cited by a page and displayed in a preset time period, and the preset time period contains a current moment; and according to the number of citation of at least one object, judging whether the at least one object is removed from the memory or not. The invention also discloses an object processing system, a computer system and a computer readable storage medium.