【正文】 he auto industry protection in post World War 2 Japan, so to shed light on the auto protection policies should be taken in China today. Here, consumer’ surplus and Ohyama Welfare Standard are selected in evaluating social welfare. The automobile industry in Post World War 2 in Japan is picked for two reasons. Firstly, the auto industry in China today is in a very similar situation as that of Japan used to be while Japan was a new member of GATT. Secondly, regarded as one of the most successfully developed industries under protection, the auto industry in Japan has some precious experiences worth studying. The article has four chapters. In chapter1,the definition of social welfare is given, and the necessary and sufficient condition for Pareto optimality, the Mashallian Consumer Surplus, Hicksian consumer surplus and Ohyama Social Welfare Standard are discussed in detail the auto industry. In Chapter 2, according the scale and protection on Japan from 19451979 is divided into four periods: government domination period, Quota Period and lowtariff Periods: government domination period, Quota Period, Hightariff Period and lowtariff Period, where the protect policies are evaluated respectively by their 3 effects on social welfare. Chapter 3 explores the USJapan trade friction in auto industry in 1980s and sheds light on the choice of various protectionists from the perspective of Political Economics. Chapter 4 concludes the whole thesis discussing some specific protection policies of Japan and drawing suggestion for China to effectively protect its own auto industry. Minicar industry development in China is a successful example in the condition of Chinese market economy, it39。t have the capability of independent exploitation and the consciousness of brand cultivation, but also affect development of automobile industry. So, during the crucial period, our country needs urgently brands of great petitive power, which can drive and prompt development of automobile industry. The paper, starting with the analysis of brand and bining with the theory of strategy management, regarding carmakers as object, depicts development panorama of domestic automobile industry and provides some simple thoughts about breeding and developing automobile brand in our country, through studying studying problems relating to automobile brand. It is the primary studying intention that upgrades core petency Of domestic automobile enterprises and impels development of automobile industry, recurring to putting forward some related tactics of breeding and developing automobile brand in our country. The paper39。 (2) modeparison of automobile brand in different countries。 s enter into WTO, analyzing the markets of the main products and the petitive opponents and analyzing the internal conditions such as the main problems faced by the pany, this writer has separately made researches and probed into the strategies of development for CITIC Zhongyuan Automobile Company and the subordinate paniesZhengzhou Nissan Automobile Co.， Ltd and Zhengzhou Light Truck Factory invested by CITIC Zhongyuan Automobile Company so as to try to find a feasible road which enables the cc叩 any to break away from the disadvantageous situation and develop continuously as soon as Possible. With the entrance of 90th century, the international situation of automobile industry changed greatly. Due to the production surplus of international automobile industry, different countries peted fiercely to obtain the automobile market. Many panies adjust their developing strategy and speed the course of globalization to realize the scaleeconomy and get the new market. Merging and rebining bee the symbol of automobile industry globalization. 4 China, the biggest automobile consuming market in the world, has bee the main field of many countries contesting. The Chinese automobile industry has developed for half century. Although china has get great achievements, as for scale or technique, China still drop behind. So how to improve the international situation and realize the modernization of China automobile industry is a basic mission. With the entrance of WTO, Chinese automobile industry faces three challenges: the first, after China entrances WTO, the government trade protection will be canceled. The second, with the economic development and standard of living improved, how to enlarge the consumer demanding? The third, with the automobile industry globalization, how to pete or cooperate with the MNC and build our effective developing strategy? And then we can develop our own auto industry and realize modernization. In the three challenges, the former two is normal and we can get many experiences from other countries. But the third is a real challenge. Other automobile developed countries have not faced this kind of situation. Expect for exactly estimation, we still need great innovation spirit. In the situation of entrance of WTO and globalization of automobile industrial petition, we try to analysis the Chinese automobile industry status quo, including the analysis of industrial structure, market analysis. Through the analysis we try to find out the questions in development strategy, government decision and enterprise management. Then we will analysis the questions and give the reasons. At the same time, we will the introduce the typical representatives of automobile developed countries and new developing countries about their developing strategy, including America, Japan, South Korea, and Mexico. We will conclude the advantages and experiences of above co