The invention discloses a fit clearance continuously-adjustable thrust rolling bearing test bench, and belongs to the technical field of bearing working performance testing. The fit clearance continuously-adjustable thrust rolling bearing test bench includes a support plate, an elastic coupling and a control device. A main thrust rolling bearing, an oil pool and a lever loading device are arrangedabove the support plate; and a drive machine is arranged below the support plate. An oil hole is formed in the center of a bearing upper cover. A thrust rolling bearing to be tested is installed in abearing seat, and fit clearance continuous adjustment is performed on an inner ring of a seat ring of the thrust rolling bearing by using fitting of a semi-conical hollow shaft and a tapered pin. Thebearing seat and a bearing seat tray are connected through countersunk screws; and the bearing seat tray and a rotary main shaft are connected through a flat key. The invention adopts a mechanical manner, and the inner and outer rings of the bearing seat ring are double-fitted, the fit clearance of the thrust rolling bearing is continuously adjustable, and the fitting type under different loads can be satisfied without replacing parts; and the structure is simple, the operation is safe, and the bearing replacement and disassembly are convenient and reliable.