The invention discloses an interface plug, an interface slot and wearable equipment. The wearable equipment comprises a first function module with an interface plug, a second function module with an interface plug and a main body with an interface slot, and therefore, the first function modules can be connected with the main body in an inserted mode, the second function modules can be connected with the main body in an inserted mode, the multiple first function modules can be connected with the main body in an inserted mode, or the second function modules can be connected with the multiple first function modules and the main body in an inserted mode. According to the wearable equipment, the functional modules with different functions can be individually and randomly combined and superposed on the main body by a user according to own actual requirements, so that the functional modules can be individually added according to the requirements of the user, the expandability of the wearable equipment is improved, meanwhile, the interface definition of the equipment is unified, and the customization and universality of the wearable equipment are improved.