The invention provides a method for manufacturing a solar cell, and relates to the field of semiconductor technology. The method comprises: laser cutting a electrode layer arranged on one side of theflexible substrate to obtain a plurality of spaced back electrodes; performing a first mechanical cutting on a fabricated high-impedance layer, a buffer layer and an absorbing layer to form a plurality of spaced areas; performing a second mechanical cutting on a fabricated low-impedance layer, the high-impedance layer, the buffer layer, and the absorbing layer to obtain a plurality of battery cells. The low-impedance layer of one of the adjacent two battery cells is arranged in contact with the back electrode of the other battery cell through the corresponding spaced area, so that the adjacenttwo battery cells are connected in series. With the above arrangement, the method can reduce the manufacturing cost and prolong the service life of the solar cells manufactured by the prior art.