Drilling track keeping device for flexible drilling tool

The invention relates to the technical field of flexible drilling tools, in particular to a drilling track keeping device for a flexible drilling tool, which comprises an upper shell, a lower shell, a hinge rod for hinging the upper shell and the lower shell, a transmission shaft assembly and a correction mechanism. The transmission shaft assembly penetrates through the upper shell and the lower shell and is connected with the flexible drilling tool, and a permanent magnet is arranged on the transmission shaft assembly in a surrounding mode. The correction mechanisms are located in the upper shell, and the at least two correction mechanisms are arranged around the transmission shaft assembly and hinged to the hinge rod. The hinged rod can drive the correction mechanism to move in the first direction, and the correction mechanism cuts magnetic induction lines of the permanent magnet to generate current so that the correction mechanism can move in the direction opposite to the first direction. A rotating magnet