Vomiting in children is caused by stimulation of the vagus nerve excitation during violent coughing. If the cough is cured, the vomiting will resolve naturally. At present, respiratory tract infection is a common symptom, mainly cough, nasal congestion, runny nose, sore throat and fever. It is recommended to take Sunflower Pediatric Lung-Heat Cough and Asthma Oral Liquid, which has the effect of clearing heat and resolving phlegm, relieving cough and calming asthma. Parents must let the child rest more during the cold, must give the child more boiled water, usually 5-7 days cold will improve. If the condition does not improve after 3 days and the fever persists, you need to take your child to the hospital for timely treatment. Because the child is relatively small, it is recommended to take the child to the hospital to do the relevant examination, to clarify the cause of the disease, according to the doctor’s recommendations and advice on the use of medication, do not blindly use their own drugs.