An electronic device includes at least two modules, each module includes at least one component; two adjacent modules of the at least two modules are detachably connected, and the two adjacent modules are electrically connected; the housings of the at least two modules are connected to form the housing of the electronic device; in the at least two modules, the first module includes a mainboard and the second module includes a battery. When any module in the electronic device needs to be updated, the module only needs to be detached from the electronic device, and then the replacement of the module is connected to other modules, thereby forming a new electronic device. There is no need to replace the entire electronic device, and the hardware cost is reduced.