(The environment of the computer room must meet the requirements of various microcomputer electronic equipment such as computers for temperature, humidity, cleanliness, electromagnetic field strength, fire protection, safety, power quality, lightning protection and grounding. Although these requirements increase the cost of computer room construction, there are huge benefits for everyone to manage and maintain network equipment such as servers. In one sentence: The pros and cons of a good computer room design and construction are directly related to the stable and reliable operation of the computer system in the computer room, the smooth operation of various information communications, the service life of the equipment and the safety guarantee.)