目的了解大连市蟑螂密度季节消长变化,为制定合理的防治措施提供科学依据。方法粘捕法。结果大连地区蟑螂的优势种为德国小蠊,占99.55%。2010-2013年的蟑螂密度为1.35只/张,侵害率为15.52%。夏季为蟑螂活动高峰时期。农贸市场捕获蟑螂的数量最高,密度最大,侵害率也最高;其次是餐饮场所和居民区;宾馆和医院最低。结论应加大对农贸市场及餐饮场所的蟑螂防治及卫生监督管理。 Objective To understand the seasonal fluctuation of cockroach density in Dalian and to provide a scientific basis for formulating reasonable control measures. Method sticky capture method. Results The dominant species of cockroaches in Dalian was German cockroach, accounting for 99.55%. The density of cockroaches in 2010-2013 was 1.35 per leaf and the infested rate was 15.52%. Summer cockroach activity peak. The number of cockroaches caught in the farmer’s market was the highest, the highest in density and the highest invaded rate. The second was the dining establishments and residential areas, the lowest in hotels and hospitals. Conclusions Cockroach prevention and control and hygiene supervision and management of farmers’ markets and catering establishments should be increased.