Laser-arc hybrid welding method and laser-arc hybrid welding system

The invention discloses a laser-electric arc hybrid welding method and a laser-electric arc hybrid welding system. The laser-electric arc hybrid welding method comprises the following steps: enabling the electric arc welder to work under set pulse current; and real-time welding current in the welding process is obtained, the power of a laser beam output by the laser device is controlled according to the real-time welding current so that the power of the laser beam can be located at a first set value before the molten drops fall into the molten pool and can be located at a second set value after the molten drops fall into the molten pool, and the first set value is smaller than the second set value. The laser is in a low-power state when the molten drops are formed and fall off, the influence on the molten drop separation process can be reduced, and the molten drops stably fall into a molten pool. The laser is in a high-power state after the molten drops fall into the molten pool, heat input is improved, penet