Rheumatoid arthritis may cause patients to vomit, but vomiting as a symptom may also be caused by adverse drug reactions, gastrointestinal diseases and other reasons. 1. Rheumatoid arthritis: rheumatoid arthritis common symptoms of morning stiffness, joint pain and joint swelling, but the disease involves the gastrointestinal tract may cause abdominal pain, diarrhea, vomiting, and even black stools and other symptoms. 2. Adverse drug reactions: the treatment of rheumatoid arthritis is mainly based on drug therapy, commonly used drugs include non-steroidal anti-inflammatory drugs, anti-rheumatic drugs and glucocorticoids, most of the drugs in these three categories may cause gastrointestinal discomfort, leading to vomiting, diarrhea, abdominal pain and other digestive discomforts. 3. Gastrointestinal diseases: patients with gastrointestinal diseases such as gastroenteritis, gastric and duodenal ulcers may also experience nausea and vomiting. Vomiting symptoms in rheumatoid arthritis patients may be related to many reasons, if the patient vomiting symptoms, it is recommended that the patient to the regular hospital rheumatology and immunology, gastroenterology and other related departments to further clarify the cause of the disease, and comply with the doctor’s instructions for treatment.