Detoxification, from the perspective of Chinese medicine, is to expel toxic and harmful substances from the body. Sneezing cannot realize detoxification in this sense, but from the Western medicine point of view, sneezing can bring out viruses, bacteria and so on. The cause of sneezing can be physiological or pathological. Sneezing is a physiologic response to external stimulation of the nasal mucosa. Sneezing is the body’s defensive reflex action in response to the outside world. When we inhale irritating gases, dust and other foreign substances, the body will expel the irritants or foreign substances from the body through sneezing. When people catch a cold, the nasal mucosa is attacked by viruses and bacteria and becomes more reactive, resulting in the symptom of sneezing. After the nasal mucosa is stimulated by allergens, the body releases a variety of inflammatory mediators, and the sensory nerve sensitivity of the nasal mucosa is increased, so continuous episodes of sneezing occur. When sneezing, bacteria and viruses can be ejected through droplets, so infectious respiratory diseases can be transmitted through sneezing and breathing. Sneezing is a normal reflex of the human body, if you feel unwell, please consult a doctor in time and follow the doctor’s instructions for reasonable treatment, do not believe the rumor that sneezing detoxifies the body.