The invention relates to a method for manufacturing a self aligned electrode on a surface of a thin-film type solar battery. The method is characterized by comprising the following steps: manufacturing a metal back electrode layer, a light absorption layer, a buffer layer, a high resistance layer and an electric conduction window layer on a substrate sequentially and arranging grooves at corresponding positions, thus obtaining a solar battery assembly in series connection; and adopting an electroplating technology to electroplate a metal layer for reducing the depth width ratio of a second groove at the bottom of the second groove, thus improving the uniformity of a transparent electrode layer and reducing the electron loss in transport. The bottom of the second groove is the metal back electrode layer, and the electroplating technology is adopted, so that the metal layer can be manufactured on the metal back electrode layer at the bottom of the groove directly, thereby avoiding the efficiency of the solar battery being influenced by the factor that metal layers are formed at a window layer and other positions.