The existing information center and environmental control system of certain government agencies are nearly 20 years old, and some of the relevant control modules have reached the replacement age. With the increasing amount of information, not only maintenance is not easy, but the functional requirements for environmental control are becoming more and more stringent. After evaluating the actual situation of the site, we keep the usable old equipment and modules and replaced the entire software system, allowing the information center to operate more efficiently with a well-planned environmental control system under a limited budget.