Abstract: Objective Study the effect of social factors to the incidence of typhoid. Methods Epidemiological field survey and case-control study. Results Total of 107 cases were confirmed, and the attack rate was 0 54%. 84 11% of the patients were in 15-35 age group. Cases were more common in female than in male. The ratio of male to female was 1∶3 86. Cold food was the major cause of this typhoid outbreak. After food and water were supervised, epidemic situation was rapidly restrained. Conclusion It's very important to enforce the ordinay food and water sanitation surveillance for preventing typhoid and other diseases.