Provided is a repair method and apparatus for flexible display panel and flexible display panel thereof. The repair method includes: providing a substrate having a first surface and an opposite second surface; forming a flexible base having bubbles bursting along the direction facing away from substrate on the first surface; forming an active layer on the flexible base for covering bubbles; forming a gate on the surface of the active layer facing away from the flexible base and irradiating the area of gate covering bubbles with laser so as to form a straight slot penetrating the active layer, the gate, and the flexible base; dripping a metallic solution into the straight slot and curing metal solution drops into conducting bodies for connecting the active layer at both sides of the slot and being isolated from gate. The repair method can address the problem of degraded display performance due to bubbles.