The utility model discloses a stator bar weaves clamping device. Constitute by fixed plate body, fly leaf body, cylinder, upper portion cylinder, hand power valve, movable check block, fixed dog, hand control valve. Fixed plate body and hand control valve are fixed on weaving the platform, and the cylinder is installed at fixed plate body front end, and T type groove has been opened on one's body to the fixed plate, and fly leaf body bottom is perpendicular to type structure, and the fly leaf body is installed on one's body the fixed plate, and along the groove slip of T type, movable check block installs on one's body the fly leaf, and fixed dog is installed and is regarded as the terminal spacing on one's body at the fixed plate. Hand power valve and upper portion cylinder install respectively the fly leaf on one's body the portion both sides. Move from top to bottom through hand power valve control upper portion cylinder, piston through hand control valve control cylinder. The utility model has the characteristics of reliable and simple, commonality are strong, low cost, the technique easily promoted.