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The automobile industry is a pillar industry of China's economic growth. In recent years, with the rapid development of automobile industry which is becoming the boost, is promoting the China's economic growth. In 2009, the first time, China became the greatest global automobile country surpassing the USA. Facing the rapid development of automobile industry, all kinds of automobile enterprises are established, unceasingly expands, increasing outputs, but we can't be cheated by these simple numbers. This paper uses the data envelopment analysis to analyze the efficiency of our country major automobile manufacturing enterprise, analyzing the input-output efficiency of major automobile manufacturing enterprise, which can provide reference for automobile manufacturing enterprises.