Objective To learn the encroachment situation of flies in large scale public greenbelt in Hongkou district and explore effective measures for controlling flies.

• 结论公共绿地既是蝇类栖息场所,也是苍蝇孳生繁殖场所,做好密度调查与有效的综合防治措施,将会较好的控制蝇密度。