Firstly, this paper analyzes the concept of environmental monitoring equipment, then deeply analyzes the research on product system design method, and then expounds the design method of environmental monitoring equipment in product system design method. Including the detailed discussion and planning of the morphological factors in the design of environmental monitoring equipment, the improvement of equipment, machines and surrounding environment in the design of environmental monitoring equipment, and the material structure factors in the design of environmental monitoring equipment. Finally, it is pointed out that the product system design method is of great significance to the design and research of environmental monitoring equipment. Through the design and research of environmental monitoring equipment, this paper provides the theoretical and scientific basis for the design of environmental monitoring equipment, and improves the working efficiency of the machine.