The credit is the base of the market economy, no matter through the macro level or the micro level, the construction of the credit system must be imperative. Through the micro level, the difficulty of the finance is the major problem in the development of the Medium-Sized and Small Enterprises. But through the push on the construction of the credit system, which could solve the difficulty of the finance. The research basing on the Changsha Bio&Information Industry Park in HUNAN, analysis the the Construction Model of Credit System and the existent problem of the construction, basing on which, ...