Children’s cold nose “puffing” can be seen in physiological phenomena, pathological conditions (such as respiratory infections), intervention needs to be carried out according to the cause, such as respiratory infections can be used to alleviate the symptoms of physiological sea saline nasal drops and so on. 1. Physiological phenomenon: children’s nasal passages are narrow, the nasal mucosa is tender and easily affected by the external environment, after “getting cold”, the phenomenon of nose “puffing” can occur, usually without other abnormal symptoms, such as fever, such children need to pay attention to warmth, avoiding cold stimulation. This kind of children should pay attention to keep warm and avoid cold stimulation. 2. Respiratory tract infections: such as acute upper respiratory tract infections, “cold” can be the trigger, during the course of the disease may appear nasal congestion, runny symptoms, manifested as “nose puffing and puffing”, may be accompanied by fever, most of the viral infections caused by the above symptoms are self-limiting, can be 7 days or so gradual relief, during which the use of physiotherapy can be used, and the symptoms can be gradually relieved, and the symptoms can be avoided. The symptoms are mostly self-limited and can be relieved gradually in 7 days. During this period, you can use physiological sea salt water to drip the nose and clean up the secretions in the nose to relieve the symptoms. 3. Allergic rhinitis: the above phenomenon can occur and last for a long time, the treatment requires the use of mometasone furoate nasal spray for local nasal spray, to reduce the edema of the nasal mucous membrane, etc., and if necessary, oral antihistamine, such as chlortetracycline, etc. for treatment. The above drugs should be used under the guidance of a physician, and it is recommended to consult a specialist for treatment.