The invention relates to a pipe climbing device. The pipe climbing device comprises an insulating pipe, a pulley block, pulley connecting plates, a braking vane and a bearing frame. A fixed pulley of the pulley block is arranged on the upper portion of the insulating pipe, and at least two movable pulleys are arranged on the outer surface of the insulating pipe in a sleeving mode and connected through the pulley connecting plates. The braking vane is arranged on one sides of the pulley connecting plates, and the bearing frame is arranged on the other sides of the pulley connecting plates. The pipe climbing device enables an operator to perform live or power-cut climbing operation and is suitable for operation in narrow space and emergency rush repair, flexible to use and capable of saving time and labor.