Children who want to vomit but can’t do so may be due to gastrointestinal colds, functional dyspepsia, motion sickness and other diseases. 1. Gastrointestinal cold: this disease is mainly caused by viral infections, such as respiratory syncytial virus, adenovirus, coxsackievirus, etc., which can be triggered by factors such as exposure to cold, rain, etc., leading to nausea, diarrhea, fever, etc., so that children with mild symptoms will be vomiting and vomiting symptoms. 2. Functional dyspepsia: This disease occurs as a result of a combination of factors, related to heredity, excessive secretion of gastric acid, high sensitivity of internal organs, mental stress, Helicobacter pylori infection, irregular diet and other reasons. The main symptoms are bloating, early satiety, belching (burping), nausea, etc., and some children may want to vomit but can not vomit. 3. Motion sickness: there are many theories of this disease, such as sensory conflict, nerve mismatch, high sensitivity of vestibular organs, hemodynamic abnormalities, neurotransmitter disorders, etc., often triggered by environmental stimuli, high temperatures, etc. Typical symptoms include dizziness, headache, nausea, panic, etc., which can sometimes be manifested as wanting to vomit but can’t spit out. Children want to vomit and can not vomit, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.