Abstract: Objective To examine current situation of and intervention effect on accidents among community severe mental disease patients in Haining city of Zhejiang province.Methods The risk of accident was assessed among 3 370 community patients with serious mental diseases registered in Haining city from September to November, 2010;then the patients(1 074)with accident risk score of ≥1 were given comprehensive intervention and the accident risk was assessed again among the patients during October to December, 2011.Results There were significant differences in the number of patients with accident risk level of 1, 2, 3, and 4 after the intervention(P<0.05).There were significant differences in the frequency of hospitalization for the patients with accident risk score of ≥1, the constitute of guardins of the patients, and the compliance of medication(P<0.01 for all).Before the intervention, the number of patients with accident was 198(18.44%, with 164 of schizophrenia)and after the intervention, the number was 76(7.18%, with 64 of schizophrenia), with significant difference(P<0.05).There were significant differences in the frequency of the accidents, the grade of adverse outcome of the accidents, the times of hospitalization, and the compliance of medication among the patients with accidents before and after the intervention.There were significant differences in the type of the mental disease, age, education, cause of the disease, constitute of guardins of the pottients, and the compliance of medication between the patients with and without accident history.Conclusion The accident risk could be decreased among community patients with severe mental diseases by comprehensive intervention involving government agencies such as health, finance, civil administration and non-government agencies such as disabled persons federation.