The current environmental issue is gained more and more attention by people; indispensable sampling project becomes a key of study on environmental science. To get a good environmental sampling result, the phenomenon of the core blocking, core lost, samples being washed, the hole wall collapsing, and so on must be overcome. Press-fitting sampling drilling tool of three layer pipes of water insulation style is mainly designed for loose and soft formation sampling. It has been proved by practice in Daihai Lake that press-fitting sampling drilling tool of three layer pipes has a very reliable performance and can meet the requirements of coring rate of 100% in environmental science core drilling.