Display device and display method for lamp selling

The invention discloses a display device for lamp selling and a use method, relates to the technical field of lamp display, and solves the problems that the position and angle of a ceiling lamp are inconvenient to adjust, the viewing angle and distance of a customer are limited, and the ceiling lamp is inconvenient to replace when being hung when the ceiling lamp is sold and displayed in the prior art. The display device for lamp selling comprises a protective shell, a lamp transmission mechanism is installed on the inner side of the protective shell, the lamp transmission mechanism comprises a transmission belt, a curved fixed sliding plate, a guide sleeve, a connecting transmission strip and a conveying belt, and the guide sleeve is fixedly installed on the inner side of the curved fixed sliding plate; and the inner side of the guide sleeve is slidably connected with a connecting transmission strip. According to the LED ceiling lamp, curved closed-loop driving adjustment is conducted on the ceiling lamp, th