The invention discloses a solar cell broken gate repairing method, which can effectively connect the broken gate and form a good path. The solar cell broken gate repairing method comprises the following steps in sequence: A, a slot is opened at the broken gate of the solar cell, a passivation layer at the broken gate is removed, and a silicon surface is exposed; B, the solar cell is electroplated,conductive metal films are deposited on the silicon surface and the gate at the slot, and the broken gate is thus connected; C, residual electroplating solution on the solar cell is cleaned; and D, the solar cell is dried.