Abstract: As an important part of the refuge "six systems"，it is significant to study the key technique of mine emergency refuge system.Taking Huize Branch Company's refuge chamber as an example，on the basis of the design on mine emergency refuge route，and according to the rated staff and national norms，the internal structure，size and shape of refuge chamber are designed.And，the key techniques of internal key subsystems in the refuge chamber such as the oxygen supply system，monitoring system，air pressure self-help system，environment control system and other systems are discussed.The research results show that the system is standard，safe and reliable，affordable，and it can provide guidance for the construction of underground mine emergency system.

Key words: Mine, The six system, Emergency refuge system, Refuge chamber, Oxygen system