The present invention relates to a self-repairing type grid drive circuit. The self-sepairing type grid drive circuit includes a plurality of cascaded GOA units, wherein the n-th stage GOA unit comprises a pull-up control circuit (100), a pull-up circuit (200), a download circuit (300), a pull-down circuit (400), a bootstrap capacitor (500), a first pull-down holding circuit (600), a second pull-down holding circuit (700), and a bridge circuit (800). The bridge circuit (800) comprises a first thin film transistor (T55), wherein a grid electrode is connected to the grid signal point (Q (N)), a drain electrode and a source electrode are respectively connected to a first circuit point (K (N)) and a second circuit point (P (N)). When operating, the first circuit point (K (N)) and the second circuit point (P (N)) are alternately arrange on a high potential. The self-repairing type grid drive circuit of the present invention can reduce the failure risk of the pull-down holding circuit caused by a long time operation of production process or GOA circuit, thereby realizing the self-repairing function of the circuit.