The invention belongs to the field of mining hydraulic motors, and particularly discloses a horizontal hydraulic cylinder type motor. The horizontal hydraulic cylinder type motor aims to achieve the technical purposes that the structure is simple, operation is convenient, safety coefficients are high, service life is long, and the underground coal mine accident rate can be effectively reduced. The horizontal hydraulic cylinder type motor comprises a box, three hydraulic cylinders, a crankshaft, a box front end assembly and a control system. An installing seat board is arranged at the bottom of the box, the hydraulic cylinders are arranged in the box side by side, the ends of pistons of the hydraulic cylinders are connected with the crankshaft through piston end covers, the output end of the crankshaft and the installing seat board are arranged on the same side, the hydraulic cylinders move in a reciprocating mode to drive the crankshaft to rotate, the crankshaft drives the control system to move, the control system controls reciprocating motion of the three hydraulic cylinders to drive the crankshaft to conduct continuous rotational motion, the hydraulic cylinders drive the crankshaft to rotate, the rotating speed is low, torque is large, and the horizontal hydraulic cylinder type motor meets the requirements for use of underground coal mine equipment.