The invention discloses a control method applied to belt weighers. The control method comprises the following steps that a voice terminal establishes a communication connection with a voice server; the voice server connected with a metering terminal prompts the voice terminal to confirm operation information, wherein the operation information comprises operation type numbers and belt weigher numbers, and the operation type numbers comprise a charging order number, a material changing order number and a material stopping order number; the voice terminal confirms the operation information and sends the confirmed operation information to the voice server; when the operation information is legal, the voice server sends the information to the metering terminal; and the metering terminal performs a corresponding operation on the belt weigher. The control method disclosed by the invention can be used for avoiding the watching of working personnel and saving labor. The invention further discloses a control system applying the control method. The control system comprises the voice terminal, the voice server and the metering terminal. The control system provided by the invention also can be used for avoiding the watching of working personnel and saving labor.