The invention relates to a laser cladding device. The device comprises a supporting seat and a nozzle located below the supporting seat, wherein the supporting seat is provided with a beam splitter and at least two reflection focus lenses; the beam splitter receives an incident light beam and reflects the incident light beam to form reflected light beams; each reflection focus lens receives one reflected light beam and converts the reflected light beam into a focused light beam; the nozzle comprises a nozzle head, a gun body and a fine adjustment device for finely adjusting the position of the nozzle; the nozzle head is arranged at the bottom of the gun body; and the fine adjustment device is movably mounted at the top of the gun body and can move relative to the supporting seat. Due to the fact that the diameter of via holes is larger than the diameter of via hole rods in the fine adjustment device, through finely moving the fine adjustment device and fastening the nozzle through the via hole rods, the purpose of realizing circumferential fine adjustment of the nozzle relative to the supporting seat is achieved, the effect that the focused light beams and the nozzle are coaxial is guaranteed so that the focused light beams can wrap a whole fused material, and therefore the precision of the laser cladding device is guaranteed.