Life to take out the output of sales, to sell it has to run (shop), point of sales of large and wide, thin and of crisscross, into a network. Only in this way can we achieve enough market rate, and improve the market share. So the circulation of commodities marketing network function is obvious. Enterprises through its own or agent sales network, transfer the product layer upon layer, finally completed in network terminal sales, formed between cash flow and logistics, enterprises are constantly profit and vitality. Marketing network, therefore, the first is a "channel", an implementation of cash flow and logistics convection, so that enterprises continuously obtain the survival and development of "channels".