Clamping jaw of robot

The invention relates to the technical field of clamping jaws, in particular to a clamping jaw of a robot. The clamping jaw comprises a guide hole plate provided with a plurality of arc-shaped guide holes, a plurality of clamping fingers, a plurality of guide rails and a driving device, wherein the guide holes are obliquely formed toward a same direction clockwise or anticlockwise to form a spiralshape; the encircling clamping fingers are uniformly formed circumferentially, and rail connecting structures and sliding bearings are arranged on the upper parts of the clamping fingers; the lengthdirection of each guide rail is consistent to the radius direction of a concentric circle; the rail connecting structures are in rail connection to corresponding guide rails; the sliding bearings areslidably connected to corresponding guide holes of the guide hole plate; and the driving device is in driving connection to the guide hole plate to rotate forward and backward to open and close to grasp and release an executed