The utility model relates to a piston-type double hanging point hydraulic headstock gear which is composed of two piston-type hydraulic cylinders, one set of hydraulic control system and one set of electric control system, wherein the hydraulic control system comprises a balance valve, a bypass oil leakage error correcting valve group consisting of a three-bit four-way electromagnetic change-over valve and two choke valves, a diverting flow collection valve, a three-bit four-way electric liquid proportion change-over valve, an external control order valve, an overflow valve, an electromagnetic overflow valve, an oil return oil filter, an oil pump motor set and the like. The balance valve is adopted for keeping pressure, the piston-type double hanging point hydraulic headstock gear is provided with functions of differentially closing a brake, controlling double pressure of opening and closing the brake, and the like. The electric control system is provided with a detecting and displaying device for brake openness, and a programmable controller PLC connected with the detecting and displaying device, adopts a closed ring synchronous control scheme for coarsely tuning the diverting flow collection valve, and finely tuning the bypass error correcting valve group, and has high synchronous precision. The system has simple structure, convenient operation and excellent reliability.