The invention discloses tool equipment and a method for a hydraulic motor front end cover two-way lip seal assembly. The tool equipment comprises an opening plastic ring, a guide sleeve ring, a firstflange, a mounting bolt, a long screw, nuts, a second flange, a middle ring, a fixing bolt, a dismounting flange and an ejection bolt, wherein the opening plastic ring, the guide sleeve ring, the first flange, the mounting bolt, the long screw, the nuts, the second flange and the middle ring are used for mounting, and the fixing bolt, the dismounting flange and the ejection bolt are used for dismounting; and the guide sleeve ring is a cylindrical part, the outer peripheral surface of the guide sleeve ring is a conical surface which is reduced from top to bottom, the inner peripheral surface ofthe guide sleeve ring is a cylindrical surface, an arc-shaped groove allowing a stepped portion of a hydraulic motor front end cover to be embedded is formed in the lower portion of the inner peripheral surface, so that a thin-wall cutting edge is formed at the lower end of the guide sleeve ring. According to the equipment and the method, the structure is simple, the operation is convenient, theproblems existing in the prior art can be effectively solved, when the seal assembly is disassembled and reinstalled, no damage can be caused to the seal assembly, the operation is convenient, time and labor are saved, and working efficiency is greatly improved.