Well cementation cement head capable of positioning position of rubber plug

The invention belongs to the technical field of oil and gas field well cementation, and discloses a well cementation cement head capable of positioning the position of a rubber plug, which comprises a cement head main body, a hoisting top cover, a support sleeve, a wire roller and a counting assembly, the cement head main body comprises an inner cavity, the rubber plug is movably arranged in the inner cavity, and the hoisting top cover and the support sleeve connected to the hoisting top cover are arranged in the inner cavity. The lifting top cover blocks one end of the inner cavity, the wire roller and the counting assembly are rotationally arranged on the supporting sleeve, a connecting wire is wound around the wire roller, one end of the connecting wire is wound around the counting assembly and then connected to the rubber plug, and when the rubber plug moves away from the lifting top cover, the connecting wire drives the counting assembly and the wire roller to rotate synchronously. The moving distance of