Auxiliary tool capable of removing supporting steel pipe at high distance

The invention discloses an auxiliary tool capable of removing a supporting steel pipe at a high distance, and relates to the technical field of subway construction equipment. The device comprises a fixing plate, a square groove is formed in the fixing plate, supporting assemblies used for supporting are fixed to the four end corners of the top of the fixing plate, a supporting plate is fixed between the top ends of the two supporting assemblies on the same side, and a supporting block is fixed between the top ends of the two supporting assemblies at the same end. An arc-shaped groove is formed in the top end of the supporting block, the supporting assembly is a supporting rod, the supporting assembly is a height-adjustable lifting piece, the lifting piece is composed of a fixing shell, a threaded rod, a connecting block and a driving motor, and the bottom end of the fixing shell is fixed to the fixing plate. Through cooperation of the supporting assembly, the supporting plate and the supporting block, when th