Two-year-old baby air conditioning runny nose may be related to allergic rhinitis, acute suppurative rhinitis, can be given general treatment and drug therapy. 1. allergic rhinitis: may be the air conditioning is not timely cleaned with more dust mites or dust, stimulate the baby nasal mucosa allergic reaction, runny nose. Runny nose can be given antihistamines and glucocorticoids, such as cetirizine hydrochloride anti-allergy. Mometasone furoate nasal spray nasal anti-allergy anti-inflammatory treatment. Usually can be cleaned air conditioning, avoid contact with allergens. 2. Acute purulent rhinitis: the baby blowing air conditioning can be due to the cold leading to decreased immunity, thus secondary bacterial infection, acute purulent rhinitis, the nasal discharge is mainly yellow-green purulent secretion, can improve the nasopharyngoscopy diagnosis, follow the doctor’s instructions to be sea saline nasal spray, to be suction care and other treatments, in addition to the addition of amoxicillin and other anti-infective treatments. The above drugs need to be used in accordance with medical advice, two-year-old baby air conditioning runny nose, there are other reasons, such as upper respiratory tract infection, etc., it is recommended to consult a doctor in a timely manner, in accordance with the doctor’s instructions to carry out the relevant examination, with the help of the doctor to clarify the cause, and targeted treatment or treatment.