The invention discloses an efficient steel pipe painting device for a building scaffold, and relates to the technical field of building scaffold steel pipe painting. The efficient steel pipe painting device comprises a material storage mechanism, a feeding mechanism, a painting mechanism and a discharging mechanism. The feeding mechanism is mounted at one end of the material storage mechanism, the painting mechanism is arranged at one end of the feeding mechanism, and the discharging mechanism is mounted at one end of the painting mechanism. The material storage mechanism comprises a baffle, side plates, a lifting table, a material guide table, a material guide slope and a material storage cavity, the material storage cavity is arranged between the material guide table and the baffle, the side plates are arranged at the two ends of the material guide table and the baffle, the lifting table is installed in the material storage cavity, and the material guide slope is arranged on one side of the material guide table. The labor cost can be reduced, a paint coating is smeared more uniformly, and the paint coating smearing efficiency is improved; moreover, a large-area field is not needed for airing and drying, so that the field cost is reduced; and meanwhile, a steel pipe coated with paint can be rapidly dried, and the drying time is greatly shortened.