Stomach vomiting a lot of mucus like phlegm is mainly considered to be related to gastroenteritis, intestinal obstruction, gastric cancer, etc. It is necessary to improve the relevant examination as soon as possible, and intervene with medication and surgical treatment measures. 1. Improve examination: when vomiting is accompanied with stopping defecation, intestinal obstruction should be considered, and it is recommended to improve abdominal plain film as soon as possible to clarify the obstruction site. In addition, if long-term vomiting is accompanied by bleeding, gastric cancer should be considered and gastroscopy should be completed as soon as possible. 2. Drug treatment: When gastroenteritis causes the above symptoms, it is recommended to take gastric stimulants to promote gastrointestinal digestion and reduce vomiting and other discomforts, such as domperidone. 3. Surgical treatment: if the patient vomits due to intestinal obstruction that prevents intestinal contents from being discharged, fasting, gastrointestinal decompression and other treatments are required, and if necessary, surgical treatment is performed to remove the obstruction site; if the vomiting is caused by early gastric cancer, surgical treatment is also required. Vomiting mucus like phlegm from stomach may also be related to other reasons, so it is recommended to go to the hospital in time, improve the examination, and give targeted treatment or therapy after clarifying the cause of the disease under the guidance of professional physicians, so as to avoid delaying the condition.