The application discloses a head mould clamping device and method, comprising a head mould mounting seat, a mounting support, a pressing device, and a tightening device; the head mould clamping device can keep the head mould orientation unchanged when the head mould is tightened, solves the problem that the head mould neck part cannot be self-adapted due to different inner contour shapes, the bearing outer ring of the head mould clamping device is in contact with the pressing block and keeps relatively still, the tightening screw is relatively fixed with the bearing inner ring, the head mould orientation is kept unchanged, the tightening force is smooth and almost without friction during the process of tightening the head mould, the pressing block is uniformly distributed in the circumference, the design of the tension pressing head mould can be self-adapted to the head moulds with different neck shapes and sizes, the user does not need to separately customize the head mould with a unified mechanical interface, can directly purchase and use in the market, can reduce the test cost and shorten the procurement cycle, is economic and practical, convenient and simple to operate, and increases the user-friendly experience.