Assuming that the scientific and technological strength of the three-body civilization can reach the level of deep excavation and wide product, then the constant era can begin to build bunkers. Different levels of bunkers can be built according to the threat of different troubled times. As an emergency shelter, bunkers need a life support system. For aerospace industry civilization, the degree of industrial automation can meet the construction requirements of a series of protection and maintenance systems supporting bunkers. In every emergency refuge in chaotic times, most people dehydrated and entered the storage bin, leaving a few people to check and maintain the general system to ensure the normal work of all aspects of the bunker. After a period of time, the system center woke up some dehydration personnel to take over the work of the original left-behind personnel, and the original left-behind personnel were dehydrated and put into storage. The system is located in an observation station on the ground or in space to monitor the planetary environment. If the conditions are suitable, the system will notify the personnel on duty on the one hand and the personnel on duty on the other hand.