The invention discloses a repairing technology for ultrasound rolling strengthening treatment of a shaft outer circle surface laser cladding layer, and belongs to the technology of shaft type component repairing and strengthening. The repairing technology specifically comprises the steps that to remove surface impurities and make the cladding layer and a base body have good bonding strength, first-time turning machining is conducted on the surface of a shaft needing to be repaired, a certain amount of outer circle surface layer is removed, then, laser cladding is conducted, the diameter of theshaft obtained after laser cladding is slightly larger than the diameter of the surface of the finally-repaired shaft, then, second-time turning machining is conducted on the cladding surface, finally, ultrasound rolling strengthening is conducted, and accordingly the final repairing diameter is formed. According to the repairing technology, operation is simple, the repairing layer is high in hardness, good metallurgy bonding is formed between the repairing layer and the base body, and disengaging is avoided; and after ultrasound rolling, surface-layer grains are fine, large residual compressive stress is formed, accordingly, the fatigue performance of the shaft is improved, and the shaft can be a stirring shaft with a stirring function in mine machines.