The embodiment of the invention discloses a class loading method and device in an Android system, equipment and a storage medium. The method comprises the steps that when the running state of an application program is consistent with annotator life cycle parameters in a preset meta-annotator, monitoring a loading triggering condition; determining a target loading mode identifier of the loading class, and determining a target class loading identifier of the target loading class according to a mapping relationship among the loading class, the class loading identifier and the loading mode identifier; calling a class object loading function and a class object instantiation function in the system Class class based on the target class loading identifier to generate a target class object of the target loading class; and based on the target class loading identifier and the target loading mode identifier, calling an element storage function of a preset key value pair set, and storing the targetclass object in the preset key value pair set. Through the technical scheme, the loading of the classes with different properties in the Android system is realized, and the convenience and managementefficiency of class loading are improved.