The invention relates to a low-voltage multiple voltage transformer and belongs to the technical field of transformers. According to the technical scheme, low-voltage windings are wound into multistage helical structure windings; the multistage helical structure windings are arranged at head and tail leading-out terminals; and winding wire heads are not connected together and are led to differentdiverter switch positions separately, so that series connection or parallel connection between various stages of windings is achieved by using diverter switches and the low-voltage windings of the transformer operate at multiple voltage. The low-voltage multiple voltage transformer has the positive effects that series connection or parallel connection between various stages of helixes of the windings is achieved by adopting the multistage helical windings and the diverter switches for cooperative switching to achieve the multiple voltage of low voltage; and the low-voltage windings of the transformer can operate at the multiple voltage and can maintain the parameters, such as operating capacity, impedance, loss and temperature rise of the transformer constant.