The analysis service for air suspension molecule pollutant sampling in clean room provided by L&K Engineering is a one-stop service in all aspects and is different from that of the traditional professional inspection company. The company put forward the suggested position planning of sampling and provides the working service for sampling analysis combing with requirements background (including the establishment of the air component Database before a new plant, daily AMC testing in the plant, relationships between bad products and environment), air return mixing status of clean room, production process and equipment decoration of the sampling analysis. Finally, based on the demand background of the sampling analysis, the significance of the sampling data is analyzed aiming at the sampling analysis results.