Objective To understand the species and densities of malaria vectors so as to provide evidence for assessing the risks of malaria transmission. Methods Mosquito species and density data in 2005-2010 and 2012-2016 years, respectively, are derived from outdoor semi-overnight trapping with human baits plus indoor early morning 50 mosquito nets, and outdoor overnight trapping with mosquito lamp. Malaria vectors and malaria prevalence data were statistically analyzed. Results No Anopheles other than Anopheles sinensis was found in 2005-2016.In 2005-2010 years, the man-biting rate of Anopheles sinensis was 34.882, 15.112, 18.714, 14.794, 2.814 and 3.048 bites per person per night, respectively. Besides, the average lamp-trap rate in 2012-2016 was 0.400, 0.250, 0.250,0.250 and 0.250 bites per lamp per night respectively. Malaria cases were mainly concentrated in 2005-2010 years. During the period, 7804 cases were reported, except for 1 case of imported falciparum malaria, all of which were local vivax malaria cases, and the cases were mainly occurred in 7-10 months. The last 1 cases of local vivax malaria case occurred in October 2012, 6 cases of imported falciparum malaria were found in 2013-2016. Conclusion Anopheles sinensis is still a single malaria vector in Yongqiao District.There is a risk of imported malaria cases, but the risk of re-transmission of imported malaria cases is not high.