The invention discloses a medical care channel for atomizing, spraying and disinfecting by using protective gas and disinfectant. The medical care channel is composed of a gate, a box body, an interval sealing isolation plate, a protective gas spraying and recycling system, a disinfectant spraying and recycling system, a channel monitoring room and an intelligent control circuit system, and is suitable for medical workers wearing bubble type positive pressure medical protective clothing to pass. When a pollution area is formed, the medical workers firstly close an electric respirator, start amicro oxygen tank carried in the protective clothing to supply oxygen, and communicate a one-way exhaust valve pipe opening in the protective clothing with a protective clothing one-way exhaust pipe in the channel box body to form an expiration discharge passage independent of the internal space of the sealed channel box body; then the channel system uses nitrogen as the protective gas to spray and discharge oxygen, and uses 70% -75% ethanol as the disinfectant to atomize, spray and disinfect; and finally, the nitrogen is used for spraying and drying, and the sprayed nitrogen and ethanol are synchronously recycled, so that the medical care channel provides support equipment guarantee for improving the safety, comfort and convenience of the medical workers wearing the protective clothing inhospitals.