The invention relates to a steel pipe processing equipment for a steel structure assembled building structure grid, comprising a supporting base plate, a clamping device and a grinding device, the clamping device is installed on the top of the supporting base plate, and the grinding device is located on the clamping device On the right side, the grinding device is connected with the support base plate; the grinding device includes a grinding electric slider group, a grinding electric push rod, a grinding fixing mechanism, a grinding support frame, a grinding inclined block, a grinding motor, a grinding frame, and a grinding sliding block , Grinding slide rod, Grinding block motor, Grinding block rotating shaft, Grinding sliding branch chain, Side grinding branch chain, Surface grinding push rod, Surface grinding block, Telescopic support column and Telescopic roller. The invention can solve the problems of high labor intensity in the welding of the existing steel pipes, the need to manually grind the cuts of the steel pipes, the poor grinding effect of the cuts of the steel pipes, and the need to manually transport the cut steel pipes to the grinding table.