【目的】 七星瓢虫Coccinella septempunctata与多异瓢虫Hippodamia variegate是重要的捕食性天敌，在生物防治中具有广泛的应用前景。开发高效饲养装置以减少幼虫自相残杀率是实现2种瓢虫规模化饲养的重要技术。【方法】 在培养皿中增加不同设计的隔断，形成3种饲养盒（Con-A、Con-B和Con-C），以空培养皿作为对照。饲养16头1龄幼虫，通过一系列参数筛选最佳隔断设计。【结果】 2种瓢虫幼虫自相残杀主要发生在饲养5 d后，但Con-C中的七星瓢虫存活数下降缓慢；在3种饲养盒中，多异瓢虫存活数的下降趋势均弱于对照。从Con-C中获得的七星瓢虫成虫数最多，显著高于对照及其他饲养盒；从3种类型饲养盒中获得的多异瓢虫成虫数均高于对照，但差异不显著。2种瓢虫幼虫主要选择在饲养盒的隔断上化蛹。从Con-A中获得的成虫个体相对较大，但雌雄具有不同变化。【结论】 在培养皿中增加隔断有利于高密度饲养七星瓢虫与多异瓢虫幼虫，为进一步开发高效、操作简便的幼虫饲养盒奠定了理论基础。

[Objectives]  The lady beetles Coccinella septempunctata and Hippodamia variegate are important and widely used biocontrol agents. Cannibalism in captive colonies of these species significantly reduces the number of insects produced for biological control so developing a rearing container that reduces cannibalism would be a significant advance in the captive husbandry of these species. [Methods]  Three different barriers (Con-A, Con-B and Con-C) were designed and placed inside plastic Petri dishes. Sixteen first instar larvae were reared in each container and the optimal design identified by comparing a series of parameters with empty Petri dishes as the control. [Results]  Larval cannibalism was obvious by the 5^th day but survival of C. septempunctata declined comparatively slowly in Con-C containers whereas survival of H. variegate was higher in all three types of experimental container compared to the control. More C. septempunctata adults were obtained from Con-C containers, which produced significantly more adult insects than the other two types of container and the control. More H. variegate adults were obtained from the three experimental containers than the control but this difference was not significant. Larvae of both species chose to pupate on the experimental barriers. Adults raised in Con-A containers were relatively large compared to those raised in the other containers, but size varied considerably between females and males. [Conclusion]  Barriers within plastic Petri dishes were effective in reducing cannibalism among C. septempunctata and H. variegate larvae at high density, a result that provides a foundation for developing effective and easy to use, rearing containers for these species.