【Objective】 This study aims to analyze the relationship between mosquito problem and landscape factors, meteorological factors in urban parks, and then summarize mosquito prevention and control strategies during ecological renovation of urban parks. 【Method】 From August to September 2021, 65 sampling points were selected within the tourist activity range of the lovers’ garden in Xuanwu Lake Park of Nanjing City, the mosquito density at each point was measured respectively, and the correlation between the mosquito density and landscape factors and meteorological factors was analyzed. 【Result】 There was a strong positive correlation between mosquito density and tree coverage, plant density at vertical height of 0.2-1.8 m and relatively humidity, and a strong negative correlation between mosquito density and hard pavement rate and wind speed in the study area. Shrub coverage, herb coverage, vegetation coverage, water ratio, whether it is a natural revetment, aquatic plant coverage, average height and temperature of aquatic plants have a small impact on mosquito density. 【Conclusion】The ecological improvement of water, soil and vegetation is the foundation of controlling mosquitoes. When designing and transforming urban parks, the following four design principles are proposed: (1)Optimize the layout of green spaces oriented towards mosquito prevention and control, and set up ecological conservation areas and buffer zones. (2) In the planting design of the park, the proportion of mosquito repellent plants and coniferous trees can be appropriately increased in the tourist gathering area, and the planting of shrubs can be reduced in the space with a vertical height of 0.2-1.8 m.(3) Strengthen the management of the water body of the park, and the water body planning follows the “big and concentrated”.(4) Improve park infrastructure, such as building permeable rainwater wells to reduce rainwater accumulation to avoid mosquitoes, and setting up mosquito control facilities.