Abstract: Objective The present study WaS designed to understand the epidemic law of typhoid fever and paratyphoid fever．Analyze the epidemic factors and explore measures for diseases pre-vendon and control Methods A descriptive epidemiologieal analysis WaS made On the data of epidemic situation monitoring for typbold fever and paratyphoid fever in the whole province Re- sults The incidence of typhoid fever and paratyphoid fever was rdafive high from l987 t0 1994． Decreased from 1995 to 1999，but tended to increase year by year from 2000 An outbreak of epi-demic occurred locally in 2004，which made the incidence of the whole province rise significantly， and the mpofled incidence rate reached 17.52／Lakh，with 2665 cases of typhoid fever and 5567 cases of paratyphoid fever．The top 4 of the whole province for incidence of typhoid fever and paratyphoid fever in 2004 were Taizhou (3422 cases，incidence rate：61．56／Lakh)，Ningbo(1450 eases，incidence rate：19．54／Lakh)，Shaoxing(805 cases，incidence rate：18 04／Lakh)and Wen- zhou (1280 cases，incidence rate：17．08／Lakh)，and the total cases of the four regions were 84．51％of the reported cases for the whole province．Shellfish have become an important factor for incidence of typhoid fever and paratyphoid fever in coastal areas．Conclusion The compm-hensive monitoring work for pmducts including seawater aquatic products shouM be strengthened o control outbreak of cyphoid fever and paratyphold fever．