Vomiting white foam can be considered as a result of digestive system diseases, and gastritis is the main cause of vomiting white foam. Due to long-term poor eating habits, it can cause damage to the gastric mucosa, resulting in stomach pain, stomach acidity, abdominal pain, nausea, vomiting white foam and other symptoms, which can be relieved by oral medications such as stomachic and antibiotic tablets and domperidone tablets. Vomiting white foam may also be caused by epilepsy. When the brain is discharged abnormally during epileptic seizures, corkscrew, convulsions, sudden fainting, unconsciousness and vomiting white foam, etc. At this time, brain CT and EEG should be examined and the cause should be determined, and anti-epileptic drugs should be reasonably selected for treatment. Vomiting white foam may also be caused by poisoning. Clinically, organophosphorus poisoning will inhibit sympathetic nerves, resulting in pupil constriction, tracheal constriction, saliva secretion and vomiting white foam, at which time first aid measures should be taken immediately to cut off toxic contact and use anticholinergics to detoxify as soon as possible.