The utility model discloses a humanoid synchronous wireless control mechanical hand system which comprises a mechanical part and a control part, wherein the mechanical part comprises a mechanical hand part and a hand motion information collecting part, the mechanical hand part comprises a palm part and an arm part, the control part comprises a collecting end MCU, a wireless transmission module and a main MCU, the collecting end MCU is used for collecting resistance value information of each potentiometer in the hand motion information collecting part and transmitting angle data of each joint of a human hand to the main MCU through the wireless transmission module, and the main MCU controls corresponding steering engines in the mechanical hand part to rotate corresponding angles to achieve synchronous movement of the mechanical hand part and the human hand. Compared with prior mechanical hands, the humanoid synchronous wireless control mechanical hand system is more flexible and easier to control. Due to the fact that the system is designed strictly according to the shape and the degree of freedom of the human hand, the humanoid synchronous wireless control mechanical hand system can be applied to the medical field to assist the recovery of the hand function of the disabled as well as to the fields like the military industry and spaceflight as an assistance hand.