The paper analyzes the problems in higher vocational education, points out that the reform of higher vocational education should be based on "task driven, theory and practice", which needs to be updated in the classroom teaching concept and improve the teachers' ability to control the classroom. Environmental Monitoring Technology and Training vocational teaching has reformed and practiced from the development of curriculum learning task, the development of physical teaching materials, innovative classroom teaching model, the design of classroom teaching process, the implementation of classroom teaching activities and the establishment of the process of teaching. Classroom teaching quality and students' professional ability have been greatly improved.