The invention relates to multi-station automatic ring sleeving equipment used after grinding of ports of metal tubes. The multi-station automatic ring sleeving equipment comprises a frame, a feeding part, a steel tube clamping part, a limiting assembly, a multi-station ring sleeving mechanism, a discharge assembly and a driving assembly; the steel tube clamping part includes a main shaft, a rotating assembly and clamping assemblies; the multi-station ring sleeving mechanism includes a rotating shaft, a support, a rotating wheel, a driving device and a feeding assembly; power is supplied by thedriving assembly; the steel tubes are clamped through the steel tube clamping part and the limiting assembly, wherein the steel tube clamping part is provided with multiple stations, and the steel tubes are driven to rotate, and the ports of the steel tubes are ground with the cooperation of abrasive paper arranged on the inner wall of the frame; then, the ports of the ground steel tubes are sleeved correspondingly with seal rings through the multi-station ring sleeving mechanism; and finally, the processed steel tubes are conveyed out through the discharge assembly. According to the equipment, by setting the multiple stations, the speed of sleeving the ports of the steel tubes with the seal rings is greatly improved, the sleeving accuracy is increased, and the automation degree of the equipment is very high.