The invention discloses a high-rise wall spraying robot and relates to the technical field of high-rise wall surface spraying. The high-rise wall spraying robot comprises a hoist, an electric cable pay-off and take-up device, a roof moving crane, a panoramic camera, an anemometer, a remote control device, a steel wire rope and a cable line. The roof moving crane is parked on a side close to a wallto be painted. The high-rise wall spraying robot also includes a hot air drying device I, a dust cleaning device I, a spraying device, a control system device, a dust cleaning device II, and a hot air drying device II. The anemometer is also arranged on the mobile crane. The hoist is connected to the spraying device through the steel wire rope. The spraying device is provided with the control system device and the panoramic camera. An upper side of the spraying device is sequentially connected to the dust cleaning device I and the hot air drying device I, and a lower side of the spraying device is sequentially connected to the dust cleaning device II and the hot air drying device II. According to the invention, the automation of the wall surface spraying is realized, the spraying efficiency is improved, the uniformity of the spraying density is ensured, the labor cost is reduced, an artificial high-altitude operation is substituted, and the danger is reduced.