The invention belongs to the technical field of special test stations, and particularly relates to a test station for test of a hydraulic retarder of a tracked vehicle. The test station has a structure formed by two boxes which are connected vertically, according to requirements of operation of the retarder, the lower box has functions of a pressure oil tank, functions of a bottom shell oil tank and a function of heat dissipation, the upper box has a function of carrying the retarder, a function of mounting an outlet valve of the retarder, a function of supplying oil for the outlet valve of the retarder, a function of lubricating the retarder and a function of opening and closing an inlet control valve of the retarder, the upper box and the lower box are connected with each other, functions of feeding oil to the retarder and returning oil are fulfilled, test construction of a rack of the retarder is implemented, and test operation on functions and properties of the retarder is realized. By the test station, required supporting conditions in a working process of the retarder are greatly integrated.