The factors that cause vomiting and vomiting blood are the following categories: 1. Acute gastritis, acute gastritis is an acute inflammation of the gastric mucosa tissue, which can be caused by a variety of factors, in clinical acute gastritis is divided into three categories: acute erosive gastritis, acute purulent gastritis, and acute corrosive gastritis. Acute gastritis can cause symptoms such as abdominal pain, nausea, vomiting, diarrhea, etc. In severe cases, it can cause blood vomiting, fever with blood in stool, etc. It can be treated with drugs such as ranitidine, atropine, cimetidine and flavopiridol. 2. Upper gastrointestinal bleeding, upper gastrointestinal bleeding refers to bleeding caused by lesions including esophagus, stomach, duodenum or pancreas, bile duct, etc. The main symptoms are blood vomiting, dizziness and black stool. For vomiting and vomiting blood caused by the upper gastrointestinal tract, it is recommended to go to the hospital for relevant examinations in time to clarify the bleeding site for symptomatic treatment.