The invention is applicable to the technical field of photovoltaic power generation and provides a solar cell and a solar cell module. The solar cell includes a substrate; the front surface of the first doping region and the back surface of the second doping region in the substrate are doped with N-type impurities, and the back surface of the first doping region and the front surface of the seconddoping region in the substrate are doped with P-type impurities; an intrinsic region is arranged between the first doped region and the second doped region in the substrate. The surface of the substrate is provided with a passivation film; the surfaces of the first doped region and the second doped region in the substrate are printed with a thin gate line and a main gate line, and the thin gate line and the main gate line penetrate the passivation film to form ohmic contact with the substrate; and a main gate line on the front side of the first dope region in the substrate is connected to a main gate line on the front side of the second dope region. The invention can prevent the fragmentation of the solar cell caused by laser scribing and improve the output power of the solar cell module.