A touch substrate manufacturing method, for manufacturing a target touch substrate to be assembled with a display substrate, is provided. A size of an active display region of the display substrate is a first preset size. The method includes: providing a touch substrate to be processed having a second preset size, the second preset size being greater than the first preset size; and cutting, in at least one cutting direction, the touch substrate to be processed to obtain the target touch substrate, the cutting direction being parallel to an extending direction of a touch channel on the touch substrate to be processed. A manufacturing method for touch module, a touch substrate and a touch module are also provided.