In the process of automatic processing, production and assembly, flexible manipulator has the characteristics of high flexibility, multiple degrees of freedom, etc. It can transfer payload to some narrow spaces, and can carry any object, which is widely used. Therefore, a mechanical gripper based on flexible track is designed. In terms of structure, a servo drive system is built by adopting line drive. The gripper is composed of a bunch of links, which are connected with each other under passive joints. At the same time, in terms of function, the free configuration function of the flexible track can achieve the function of grabbing objects of any shape by wrapping.