A handle for a handheld terminal includes a first interface module, a first key module, a first power supply module, and a base handle module. The handle couples with the handheld terminal. The handle makes a wireless connection with the handheld terminal the first interface module or a wired connection with the handheld terminal via the first interface module. The first key module includes one or more user operation command keys. The first power supply module supplies power for the handle. The handle is operable with one hand.