The invention belongs to the field of mining hydraulic motors, particularly discloses an equidistributed angle hydraulic cylinder type motor with a backwashing filter system, and aims at achieving the technical purpose of providing an equidistributed angle hydraulic cylinder type motor which is simple in structure, convenient to operate, high in safety coefficient, long in service life and capable of effectively reducing the underground coal mine accident rate and is provided with a backwashing filter system. According to the technical scheme, the equidistributed angle hydraulic cylinder type motor with the backwashing filter system comprises an oil tank, a filtering device, an oil pump and a hydraulic cylinder type motor body, the oil supplying port of the oil tank is connected with the oil inlet of the oil pump through the filtering device, the oil outlet of the oil pump is connected with the oil returning port of the oil tank through the hydraulic cylinder type motor body, the hydraulic cylinder type motor body converts horizontal reciprocating movement of a hydraulic cylinder into rotational movement of a crankshaft, the filtering device is used for providing clean emulsion for the hydraulic cylinder of the hydraulic cylinder type motor body, and the service life of the hydraulic cylinder type motor body can be prolonged.