【Abstract】 Objective To deeply know the role of the reporting of dead rodents in the monitering and control of commensal rodent plague and its cooperation with linking surveillance method. Methods  （1）To compare and analyze the function of dead rodents reporting and three plague?risk indicators reporting on the timely finding of the plague in rodents. （2）To analyze the relationship between dead rodents reporting and linking surveillance method and study the function of the latter. Results （1） The reporting of dead rodents contributes to, and other two plague?risk indicators reporting has no relation to the detection of commensal rodent plague among rodents.（2）The two HD techniques in monitoring and control system of commensal rodent plague are dead rodents reporting and linking surveillance method, of which, the former is mainly in charge of the detection of the plague among rodents in time, and the latter has two roles, namely both decreasing and founding the epidemic foci among rodents, especially in decreasing them. Conclusion The emphasis should be put on the popularization of 2HD technique in order to detect and control rodent plague in time in the monitoring and control of commensal rodent plague, and at the same time,  the reporting of three plague?risk indicator should be understood and treated correctly.

Objective To know deeply the incidence mechanism of commensal rodent plague and scientifically work out or choose appropriate surveillance and control measures.Methods The transmission route from rodents to humans of commensal rodent plague was expressed by mathematical language to show up the inherent relations among the decisive factors,and its relevant monitoring methods were analyzed and compared.Results(1)An incidence mode function of the plague was derived.(2) The linking surveillance method was more effective than the parallel surveillance method,and the former was more accordant with the epidemiology principles,the statistics requirements and the "benefit-cost ratio" requirement because of its smaller workload.Conclusion(1)The incidence mode function on commensal rodent plague disclosed the inherent relations among the decisive factors of the disease,and had the important guide function and wide application prospects to its prevention and control.(2)The linking surveillance method should be suited to the surveillance of plague compared to the parallel surveillance method.