There are more reasons for vomiting and vomiting foam, the common ones are bad diet, respiratory diseases, gastrointestinal diseases, epilepsy, poisoning, etc. You should go to the hospital to clarify the cause and treat the symptoms. 1, bad diet: often eat indigestible, spicy and stimulating food or abdominal cold, etc., there will be nausea and vomiting, try to eat three meals regularly and quantitatively, healthy regular diet, less oil and salt, pay attention to abdominal warmth; 2. Respiratory diseases: chronic bronchitis, obstructive emphysema and other attacks will cause coughing with large amounts of white foamy sputum and even nausea and vomiting due to increased bronchial mucosal secretions. It is recommended to do chest imaging and sputum culture to confirm the cause, and to choose antibiotics, such as amoxicillin, phlegmolytics, such as aminophylline hydrochloride, and asthma medications, such as aminophylline, for comprehensive treatment, and to drink more water, take more rest, and exercise appropriately to improve symptoms; 3. To confirm the cause of the disease. Drug treatment can choose acid suppressants and gastric mucosal protective agents, combined with H. pylori infection need to take antibiotics + proton pump inhibitors, such as metronidazole + omeprazole or perform the eradication of pathogenic bacteria; 4, epilepsy: can appear amorphous, sudden recurrent episodes of foaming at the mouth, limb convulsions, sudden fall to the ground symptoms, the seizure should help the patient to bed or homeopathic to make them lie down, to prevent sudden loss of consciousness and The patient should be helped to the bed or lie down in a home position to prevent sudden loss of consciousness and fall, quickly remove the surrounding hard objects and sharp objects, loosen the patient’s collar, and tilt the head to the side so that secretions and vomit can be discharged from the mouth to prevent choking and suffocation. The treatment of epilepsy is complex and varied. It is recommended that a cranial MRI be done at the hospital to confirm the diagnosis and follow the medical advice for causal treatment. Drug treatment includes traditional antiepileptic drugs, such as sodium phenytoin and phenobarbital, and new antiepileptic drugs, such as lamotrigine and levetiracetam; 5. Poisoning: drug poisoning and formaldehyde poisoning can cause damage to the respiratory system and trigger symptoms of vomiting and foaming, which should be removed as soon as possible. For those whose skin is poisoned, contaminated clothing should be removed immediately and rinsed repeatedly with large amounts of water at the scene. For conscious people who have taken poison orally, they should immediately and repeatedly implement emetic, and rush to the hospital as soon as possible for gastric lavage and detoxification treatment such as atropine. In addition, viral hepatitis, pancreatitis, cholecystitis, central nervous system diseases (encephalitis, meningitis, hypertensive encephalopathy) may also lead to vomiting and vomiting foam symptoms, but is not common, suspected of the above cases need to immediately go to the hospital for specialist examination and treatment to avoid delaying the disease.