The invention relates to a dermatological smearing device, which solves the problem that the dermatology treatment is troublesome and easy to cause cross infection when the drug is applied in a largearea. The device comprises a casing, wherein a downward push rod is arranged in the casing, a first medicine bottle is arranged below the push rod, a first medicine feeding tube is fixedly connected below the casing, and a taper liquid outlet is inserted into the first medicine feeding tube for fixation, the outer side of the first medicine feeding tube is provided with a protection cylinder body,and the protection cylinder body is fixedly connected with the casing, the lower end of the first medicine feeding tube is screwed and fixedly connected with a second medicine feeding tube, and the second medicine feeding tube is provided with a clamping device, the clamping device is rotatable, the clamping device is provided with a smearing wheel, and the smearing wheel is arranged below the second medicine feeding tube. The dermatological smearing device improves the effect of the medicine; saves time and labor, has flexible operation, high efficiency, less failure and reusability, and improves the working efficiency for the medical staff.