Correcting machine

The invention relates to a correcting machine. Comprising a working table top arranged in a machine table, a left correction module and a right correction module which are movably arranged on the working table top, and a hooking and pulling assembly used for pulling a chain. The left correction module and/or the right correction module can translate relative to the working table and are symmetrically arranged, and a variable distance between the left correction module and the right correction module is used for correcting the correction distance of a chain; an inlet and an outlet are formed in the opposite positions of the two side walls of the machine table respectively, a correction channel is formed in the working table top and transversely penetrates through the left correction module and the right correction module, and the two ends of the correction channel extend to the outer portions of the inlet and the outlet respectively. The hooking and pulling assembly is arranged on one side of an outlet of the