The invention discloses a method used for controlling roller rotary spray quenching technology. A quenching temperature control device comprises an upper computer, wherein global control programs and ideal cooling curve data of rollers are stored in the upper computer; and temperature measuring units and a PLC which are both connected with the upper computer, wherein the output end of the PLC is connected to spray control units. In quenching processes, a real-time temperature determined by the temperature measuring units is received by the global control programs of the upper computer; and real-time regulation of air pressure and hydraulic pressure are performed by the global control programs of the upper computer according to the difference between the real-time temperature and an ideal temperature; so that the cooling speed is close to the cooling speed of the ideal cooling curve, temperature control precision of the quenching processes is ensured, and quenching efficiency is increased. In addition, the method possesses advantages that: cooling is uniform, quenching quality is stable, and the like.