When a patient has a sour nose when yawning, two main conditions are considered: the first one may be that the patient has a cold due to blowing the air conditioner, or the body’s resistance has decreased. At the same time, the patient may also have a stuffy nose and a clear runny nose. The second possibility is that the patient has allergic rhinitis, which may be caused by contact with pollen, dust mites, or artemisia. The symptoms of yawning, sore nose, itchy nose, and clear runny nose appear. If the patient is suffering from cold, he can take cold and fever granules or Banlangen granules. If the patient is due to allergy, he or she needs to take oral anti-allergy medication, such as loratadine dispersible tablets, or montelukast sodium tablets, and can also be treated with budesonide nasal spray in the nasal cavity.