玉米是我国第一大粮食作物，在国民经济中占据重要地位。玉米虫害是影响玉米生产的重要因素，严重威胁玉米产量和质量。瓢虫是蚜虫、叶螨、玉米螟等玉米害虫的主要天敌，对玉米害虫控制起着重要作用。明确玉米田天敌瓢虫的资源状况和种群动态对维持农田生态系统生物多样性、制定合理的害虫防控措施具有重要意义。文章研究连续3年对吉林省公主岭市玉米田天敌瓢虫资源和优势种群异色瓢虫种群动态进行定点监测，同时采用马来氏网收集昆虫标本作为补充。本研究获取了当地天敌瓢虫资源状况和种群动态的第一手数据，采集制作了大量的瓢虫标本，拍摄了高质量的调查地环境和天敌照片，建立了吉林省公主岭市玉米田瓢虫数据集。数据调查频率高、时间长、方法稳定，为天敌资源的保护和利用提供了基础信息。

Corn is the first major food crop in China, which occupies an important position in the national economy. Insect pests are important factors affecting local corn production, among which corn borers, aphids and spider mites are the major pests that seriously threatening corn yield and quality. Most coccinellid ladybugs are natural enemies of insect pests. They mainly feed on small arthropods such as aphids, mealybugs, whiteflies, spider mites, and also eggs of lepidopteran pests such as corn borers, playing important roles in controlling agricultural and forestry pests. Clarifying local natural enemy resource status and their population dynamics is important in maintaining biodiversity in agro-ecosystems and guides developing appropriate pest management strategies. In the present study, coccinellidae resources in Gongzhuling, Jilin were surveyed and population dynamics of the dominant species, Harmonia axyridis, were monitored for three consecutive years. A large number of coccinellidae specimens were collected and made, and high-quality photos of the environment and natural enemies were taken. A data set of coccinellidae in the corn field of Gongzhuling City, Jilin Province was established. These data were highly frequently surveyed during a long timing, with stable sampling methods. They provided information for natural enemy resource conservation and utilization.