Traditional theory and practice pay much attention to the function of self-discipline，safeguarding，statistics，investigation and promoting suggestions given by association，however，the function of selecting funds in investment promotion，controlling of project threshold and optimizing the industrial structure are neglected. Meanwhile，the function of improving social civilization，strengthen social fame and broaden the contact is also dropped. Nowadays，in order to realize the new goal of development in Guangzhou，the function of the market supporting and replenishing，as well as the above neglected and dropped function，given by the association must be recognized，so that the vacuity and deficiency of the government and market can be remedied.