With the continuous improvement and development of groundwater monitoring technology, the techniques, which use single-hole to monitor multi-level, supply in groundwater monitoring aspect widely. As a member of multi-level monitoring techniques, the continuous multi-channel monitoring well uses a new structure type of well completion to achieve monitoring multi-layer groundwater in single well, and collecting water samples for analysis of water quality. It can reduce the cost of construction and monitoring, improve monitoring efficiency. The issue described the completion materials and the improved well completion technology of continuous multi-channel monitoring technique in detail. Combining with application of the technique in Hei River basin groundwater monitoring processes and hydro-geological analysis of the actual monitoring data can verify the practicability and validity of continuous multi-channel monitoring technique.