The invention provides a matching method for a square winding needle of a winding machine. The method comprises the following steps: (1) calculating a destination winding needle width according to a destination winding needle perimeter and universal winding needle parameters; and (2) measuring winding needle widths within a fluctuation range of the destination winding needle width, and picking up a winding needle of which the winding needle width is equal to the destination winding needle width. Through adoption of the matching method for the square winding needle of the winding machine, the winding needle width which is easy to measure can be concluded according to the designed winding needle perimeter, and the winding needle is matched according to the winding needle width, so that actual production is guided effectively; waste of man power and material resources during half-automatic/full-automatic winding machine adjustment is reduced; the winding needle perimeter accuracy is increased; and a product can better meet specification requirements.