华北地区室外观贫树种几乎全部受蚧虫为害。其中，花灌木普遍受害，乔木受害不均衡，竹类受害较轻。在室外观赏树秤上为害的蚧虫有６科３８种，以盾蚧科、蚧科、粉蚧科种类为主。最后，给出了以田间识别特征为主的主要观赏树秤蚧虫种类识别检索表。 Nearly all outdoor species of poor species in North China are damaged by scale insects. Among them, flower shrubs generally suffer, tree damage is not balanced, bamboo victims less. In the outdoor ornamental tree scale damage scale insects, there are 6 families 38 species, to Digesidae family, scale Division, the main species of mealyum. Finally, we give the retrieval table of the species of scale-scale insects, which is mainly composed of the field identification features.