The invention relates to the technical field of robots, and provides a human-simulated mechanical hand. The human-simulated mechanical hand comprises a mechanical arm and a mechanical gripper which are connected to each other, wherein the mechanical arm comprises a large arm and a small arm; a shoulder pitching joint, a shoulder yaw joint and a shoulder rolling joint which are connected to a shoulder are arranged on the large arm; an elbow pitching joint and an elbow rolling joint which are connected to the large arm are arranged on the small arm; and a wrist yaw joint connected to the small arm is arranged on the mechanical gripper. According to the human-simulated mechanical hand provided by the scheme, the three joints on the large arm realize bionics design of a spherical joint at a joint of the arm and the shoulder; the bionics design of the elbow joints of the arm is realized by the two joints of the small arm; and one joint on the mechanical arm realizes the bionics design on a hand. The human-simulated mechanical hand has a relatively high motion space and relatively high motion flexibility, and can replace people to complete special work which is not liable to complete; and an operator conveniently controls according to intuition and experience, so that control efficiency and accuracy can be improved.