B2C C2C, no matter how to become a hot social a public discussion, but around two profit and credit Laosheng focus on and facing a very embarrassing situation of the topic. An B2C enterprise announced what time to profit, Taobao suffered the impact of credit system needs to be improved and so on, but the money is still busy. B2B supports most of the share of e-commerce transactions. According to statistics, in 2008 China’s B2B market transaction size of more than 3 trillion yuan, accounting for more than 90% of e-commerce transactions. Experts predict that with the development of China’s e-commerce, B2B e-commerce market will expand the size of the geometric series, which will bring unprecedented opportunities for e-commerce. in particular, it is true that, despite the fact that e-commerce is a diversified development, B2B is the only way to make a stable profit in the three models. with the success of the integrated e-commerce Alibaba listed in Hongkong, B2B e-commerce show continued profitability is widely optimistic. The emergence of a large number of B2B e-commerce platform also flourished in the B2B market, but also the diversification of e-commerce development and service providers to provide the environment, many B2B sites also occupy a considerable market. Among them, the B2B commercial search engine (youboy.com) a hundred responses to a single call is a branch of business segments B2B under B2B, become an independent school in vertical search in the search, with its offbeat attention. small and medium-sized enterprises is the biggest driving force for the development of B2B e-commerce in china. Occupy more than 90% enterprises in China, known as the "China economic engine" of small and medium enterprises but because of capital, technology, ideas and other factors, the pace of fall in popularity in the development process of e-commerce. In this process, SMEs are in urgent need of business information, access to the opportunity to display their own network, contact business opportunities to maintain business relations. is a professional B2B business; a hundred responses to a single call search engine, B2B provides business information for the small and medium-sized enterprise search and trader contact. Through this new search tool, the creation of B2B electronic shops, the establishment of customer relationships. the current B2B transactions are online contact, line trading, which effectively avoid the problem of credit risk. So as to small and medium-sized enterprises of various raw materials semi-finished products block trading, provides the possibility. According to statistics, the average number of transactions B2B network more than 70 thousand yuan. due to the characteristics of B2B e-commerce business transaction objects, the relative personal consumption for the purpose of the transaction (C), B2B will continue to play the role of the protagonist. In the third APEC e-commerce business smart forum, director of Finance and trade China Academy of Social Sciences assistant Jing Linbo pointed out that the current China e-commerce is still the mainstream of B2B.