With the rapid development and progress in computer science and information science technology, the combination of computer and real-world is needed. New technologies also provide novel techniques for environmental management. This paper establishes a framework for an Environmental Internet of Things (EIoT) and describes key technologies, including Wireless Sensor Network (WSN), network techniques, Geographic Information System (GIS), WebGIS, and distributed database techniques. Our proposed framework is consist of the following parts: (1) Sensors for touching, (2) network monitoring system, (3) database and data pool, (4) environmental information platform and management system(IPMS). The EIoT can also realize online environmental simulation and management and is currently being extended to the city, regional, and national levels. The design and implementation of EIoT will help us touch the real urban environment and assist to state-of-the-art technological solutions for the severe environment problems.