Underground water pollution early warning system

The utility model discloses an underground water pollution early warning system, and belongs to the technical field of underground water monitoring. Comprising a sampling instrument, a wire, a detection head and an audible and visual alarm, and further comprises a supporting frame and a protection frame, the supporting frame can be expanded or contracted, the protection frame can be expanded or contracted, the wire penetrates through the supporting frame and can be fixed to the supporting frame, and the detection head is fixed to the center of the protection frame. The technical effect of avoiding friction and collision between the detection head and the guide and the inner wall of the monitoring well is achieved. 本申请公开了一种地下水污染预警系统，属于地下水监测技术领域。包括采样仪、导线、检测头及声光报警器，还包括：支撑架和防护架，所述支撑架可扩张或收缩，所述防护架可扩张或收缩，所述导线贯穿支撑架，所述导线可固定在支撑架上，所述检测头固定在防护架的中心，实现了避免检测头和导向与监测井内壁摩擦碰撞的技术效果。