The invention relates to an automatic take-up type moving power box, which comprises a box body, a power line roller, a power line, a switchboard and travelling wheel sets, wherein the power line roller is arranged in the box body, the power line is wound on the power line roller, the switchboard is arranged at the bottom part of the box body, and the travelling wheel sets are arranged at the bottom part of the switchboard; a rectangular paying off port corresponding to the power line roller is formed in a front side plate of the box body. The automatic take-up type moving power box is characterized in that a guide block is assembled at the position of the paying off port of the box body; the upper end face and the lower end face of the guide block are respectively provided with idler wheels rolling along the upper edge and the lower edge of the paying off port; the middle part of the guide block is penetrated and a set of guide wheels is arranged at the penetrated position; one end of the power line is connected with a power socket on the switchboard, and the other end of the power line is led out from a sandwich groove between the two guide wheels and is connected with a power plug; the box body is also fixedly provided with a motor, and a gear transmission mechanism is arranged between an output shaft of the motor and the power line roller; a reciprocating linear transmission mechanism is arranged between the output end of the gear transmission mechanism and the guide block. The automatic take-up type moving power box is reasonable in structural design, convenient and reliable in use and obviously increased in work efficiency.