The Six Systems is required to be established and improved for the safety of under ground coal mining,and it is also an important technique to ensure the safety of employees during emergencies or waiting for rescue.Based on the design of emergency safety system of MineB in Yunnan province as an example,this research built a multi-level defense system to ensure its effective operation during the disaster adhering to principles of being scientifically being reasonable,being suitable,being simpleand being safe.Based on the mine disaster analysis of actual production conditions of the mine,position,structure,function of the mine refuge chamber were designed.The basic equipment required for the safe haven system and the number of configurations were also calculated to meet the mineB construction requirements in Yunnan.This design has been reviewed by the local safety super vision bureau,which can be used as a reference for the emergency design of a similar mine.