The invention discloses an electromagnetic hydraulic valve. The electromagnetic hydraulic valve includes an oil inlet and a pressure measuring opening; the oil inlet communicates with a torque converter and a pressure reducing valve, and the pressure measuring opening is formed in the output end of the pressure reducing valve and is connected with a direction gear and a speed gear; the direction gear comprises a forwarding gear KR and a retreating gear KV, and the speed gear comprises a first gear K1, a second gear K2, a third gear K3 and a fourth gear K4; the pressure measuring opening is connected with a clutch cylinder; an overflow valve is connected between the oil inlet and the torque converter; the input end of the torque converter is connected with a torque converter safety valve through a pipeline, and the output end of the torque converter is connected with a counterbalance valve through the pipeline; the output end of the counterbalance valve is connected with an oil pump radiator through the pipeline, and the oil pump radiator is connected with a lubricating oil path through the pipeline; and the output end of the torque converter safety valve is connected with an oil tank through the pipeline. According to the electromagnetic hydraulic valve, the pressure reducing valve can slowly adjust the pressure in the gearshifting process, and the problems that hydraulic impact is high at the moment of gearshifting, and fatigue is easy to generate due to frequent gearshifting by traditionally adopting machine fluid to conduct gearshifting operation.