塑料检查井俗称塑料“窨井”，是设置在塑料排水管道交汇处、转弯处、管径或坡度改变处、跌水的地方或直线管段上每隔一定距离处，便于定期检查、清洁、疏通管道的排水附属构筑物。
Plastic inspection wells, commonly known as plastic "baskets", are set at the junction of plastic drainage pipes, turning points, pipe diameter or gradient changes, drop places or straight line pipe sections at a certain distance, so as to facilitate regular inspection, cleaning and dredging of drainage ancillary structures of pipelines.
塑料检查井按用途可分雨水塑料检查井和污水塑料检查井，应用领域分为建筑小区排水用塑料检查井和市政排水用塑料检查井。塑料检查井由井座、井筒、井盖和塑料检查井零配件组成。检查井井筒可采用埋地排水管材，如PVC-U双层轴向中空管、HDPE中空缠绕管等。
Plastic inspection wells can be divided into rainwater plastic inspection wells and sewage plastic inspection wells according to their uses, and their application fields can be divided into plastic inspection wells for drainage of building blocks and plastic inspection wells for municipal drainage. The plastic inspection well is composed of wellbore, wellbore, well cover and spare parts of the plastic inspection well. Buried drainage pipes such as PVC-U double-layer axial hollow pipes and HDPE hollow winding pipes can be used in inspection wellbore.