The slight dent in the appearance of aluminum alloy car body mainly means that there is an elastic dent less than 2mm on a large plane of the car body. After the car body is repaired, it has little influence on the car body paint, and the effect after repair is good, the repair price is low, and there is no adverse effect on the car body. When repairing minor dents, first clean the dents with detergent and cleaning cloth, observe the dents and carry out the next repair work. Then remove the interior decoration that hinders the repair inside the car body, and then push it out from the inside of the car body with a crowbar, and ensure that the crowbar is evenly applied and operated repeatedly. At this time, use the strip lamp to illuminate, observe the situation of the depression, and stop the operation of the crowbar until the depression is completely repaired. Wait for a few minutes, and the whole repair work is completed after the repair area is stable and no longer deformed.