At present, China's auto production, ranks fourth in the world, is followed by the United States, Japan and Germany. However, in the Aluminum using rate of cars, China's technology is still relatively backward. In developed countries, the amount of aluminum used in each car is 138kg; the aluminizing rate is up to 12%, while the use of aluminum on each car in our country still have a large gap between foreign countries, the average amount of aluminum is only about 60kg, aluminizing rate is less than 5%. Therefore, China's automotive aluminum alloy market still possesses a very broad development prospect