Let the mechanic bake it in the iodine tungsten lamp and it will come out. You can have your own hair dryer, but don't blow it too close. The original bumper of the car is made of ABS material, which has strong plasticity. It will automatically pop up after a little heating. Solution: 1 The shell of the car is made of iron and plastic, and most of the front and rear safety covers of the car are basically made of plastic. Basically all plastics will soften when heated. Of course, according to this principle, the concave piece can also be pushed out by heating. The first task is that we need to burn a big bucket of hot water, and then add water to the concave place with a spoon to heat the hot water; It takes a long time to heat with hot water. Because the concave plastic has to be heated to a certain extent before it becomes soft, and the effect can be achieved; 4. After the plastic is heated to a certain extent, remove it from the top of the engine cover. Push outward by hand until the sunken place bulges back; But if you feel hard and can't push it out, it means you haven't heated it yet. It also needs a large dose of hot water to heat it.