Objective To investigate the influencing factors of quality control on pest management services for the external environment, provide evidence to improve the service quality of pest control. Methods The performance of pest control in the external environment of community throughout the city that pest control operation(PCO)companies contracted with was evaluated by a project supervision panel through public bidding, as the third party specialist agency, and on a commission basis by Office of Patriotic Health Movement of Wuhan according to its internal supervision scheme. Results The results of evaluation on the performance of pest control in 712 to 1 006 community units in external environment that PCO companies contracted with from 2010 to 2014 were obtained. The five years'rodent density of extending 2 000 m was ≤2.30, Path index of mosquito larvae and pupae ≤0.73, and the positive rate of cockroach adults and nymphs indoor ≤1.63％, the positive rate of fly larvae and pupae ≤8.91%. The results met the required standards set forth by the National Patriotic Health Campaign Committee. Conclusion Through the supervising evaluation campaign, the quality of pest control in PCO companies was improved, the density of the four pests in the external environment of community of Wuhan city declined, the wellbeing of the residents was enhanced. Suggestions for improvement of the common issues found during the supervising evaluation process were made.