The invention relates to a hydraulic balance reciprocating pump. The hydraulic balance reciprocating pump comprises a synchronous isolation device, an isolation sleeve with an inner cavity and a piston movably arranged in the inner cavity of the isolation sleeve, wherein the periphery of the piston is in sealing fit with the inner wall of the isolation sleeve and divides the inner cavity of the isolation sleeve into a first cavity and a second cavity, the first cavity communicates with a liquid inlet of a pump body, the second cavity is filled with hydraulic oil, an overflowing runner is arranged in a crosshead, a balance cavity is formed in the position, connected with the rear end of s plunger, of the front end of the crosshead, and the overflowing runner communicates with the second cavity so that the hydraulic oil in the second cavity can enter the balance cavity and act on the rear end of the plunger in a hydraulic mode. According to the hydraulic balance reciprocating pump, a pressure source of the hydraulic end compresses hydraulic oil through a piston in the isolation sleeve to transmit pressure to an overflowing runner and a balance cavity of the crosshead, then hydraulicforce acts on the plunger, the purpose of balancing plunger force is achieved, the motion stress face of the power end is promoted to enter lubricating oil, and the problem that dry grinding, heatingand burning loss occur due to the fact that lubricating oil cannot be supplied in an unbalanced mode is solved.