Virus killing respiratory system

The invention relates to the technical field of respiration protection articles, and discloses a virus killing respiratory system. The virus killing respiratory system comprises a respiration cavity,a heating cavity, a mixing cavity and a refrigerating assembly, wherein the respiration cavity is used for coating the mouth and the nose of a user; a gas inlet passage and a gas outlet passage of therespiration cavity are independently arranged; the heating cavity is used for allowing gas to enter, and heating air to kill viruses; the mixing cavity communicates with the respiration cavity and the heating cavity; one end of the refrigerating assembly extends in the mixing cavity; and gas from the heating cavity enters the mixing cavity, is cooled by the refrigerating assembly, and then entersthe respiration cavity to allow a user to inhale, and exhaled gas passes through the mixing cavity for discharging. Through the adoption of the virus killing respiratory system disclosed by the invention, the situation that th