Abstract:Open with our country successive steps is thorough, a socialist market economy builds a social security system step by step, be being perfected. Medical insurance system is a systematic important subsystem of social security, and with relatively independent insurance system existence, the person operates a pattern direct the stability being related to society and the course reforming good and bad, the health being related to the people ensures. The main body of a book aim at recollecting Wenzhou City downtown area medical insurance fund operation and developing trend. Key words:Medical insurance system; Developing trend