After two years of construction and application since 2017, the "Environmental Internet of Things (IoT)" now has a considerable scale (it is expected that the EPA will cooperate to deploy more than 7,000 empty micro-sensors in 2019). How to strengthen and maintain the system and various One of the important goals is the security of endpoints and the provision of continuous services. This project will use this as a benchmark to assist the relevant units of the project to strengthen the security of the Environmental Internet of Things, and take stock of various systems of the Environmental Internet of Things, and establish safety monitoring, technical inspection, standardized establishment and management systems for related. Finally, the above-mentioned information security system is introduced to minimize the operational risks of the Environmental Internet of Things system, so as to provide the integrity, security and availability of the system. It also conducts information security testing for the internal systems and air quality sensors deployed in the environmental protection bureaus of counties and cities. In addition, the Guidance Department will cooperate with the Information Security Office of the Executive Yuan to construct the guidance of the people’s livelihood public Internet of Things project promotion group to help the Environmental Internet of Things system pass the 2019 and 2020 public livelihood public Internet of Things project security inspections.