The invention discloses a vertical visual oil film power test device, which mainly comprises a prime power part, a liquid viscosity host machine, an oil film thickness regulating device, a support seat and the like, wherein an upper box cover, a lower box cover and a support plate of the liquid viscosity host machine are connected through screws to form a liquid viscosity host machine case, a sleeve passes through the upper box cover and is fixed with the upper box cover through welding, an input shaft passes through the sleeve to be connected with a driving sheet support seat, a driving friction sheet is fixedly arranged on the driving sheet support seat, a driven friction sheet is fixedly arranged on a driven sheet support seat, the driven sheet support seat is connected with an output shaft, the output shaft is connected with an output shaft fixing stop block and is fixedly arranged on the lower box cover, the output shaft is maintained not to rotate, meanwhile, the output shaft is fixed with a groove block through a pin post, the groove block is arranged on a wedge-shaped slide block, the wedge-shaped slide block moves through regulating a lead screw, and the ascending and the descending of the output shaft in the vertical direction are realized. The vertical visual oil film power test device has the advantages that the operation is convenient, the structure is simple, the detection is easy, and the functions of wide-range oil film thickness regulation, fine regulation, visible oil film flow state and the like can be realized.