The baby has been sneezing and runny nose may be related to colds, allergies and other factors, you can improve the blood routine, allergen testing, clear diagnosis can be followed by the doctor to be related to drug treatment. 1. Cold: baby upper respiratory tract infection can appear after the symptoms of sneezing and runny nose, you can go to the hospital to improve the blood routine and other tests to assist in the diagnosis, if you consider that bacterial infections may be, you can use antibiotics, such as cefixime, etc., such as the consideration of viral infections caused by the main symptomatic supportive treatment, such as sputum, sea salt water nasal spray, and so on. If it is clear that the influenza A virus or highly suspected influenza A virus infection, can follow the medical advice to be oseltamivir anti-infection treatment. 2. Allergy: If the baby is allergic to dust mites, pollen, animal dander, etc., he/she may sneeze and runny nose all the time, you can do allergen test, if there is allergy, you can use anti-allergy medication, such as loratadine tablets, and pay attention to the side effects of the medication, such as drowsiness and fatigue. It is recommended to take the child to the hospital to do a checkup, to identify the cause under the guidance of the doctor treatment, do not use drugs privately.