In cases of particularly severe pain, lumbar forks may cause gastrointestinal dysfunction and vomiting. However, vomiting is not a typical symptom of lumbar sprain. Lumbar sprain is generally referred to as acute lumbar sprain, i.e., acute injury to the lumbar muscles, ligaments, fascia and other tissues caused by a sudden external pull or a sudden change in lumbar posture, mostly occurring during strenuous exercise, lifting and carrying of heavy loads and other strong contraction of the lumbar muscles. Patients mainly manifested as lumbar pain, activity limitation, etc., and in severe cases, lumbar deformity, muscle spasm, localized pressure pain, etc. may also occur. When the pain of lumbar forks is severe, the intense pain may stimulate the excessive secretion of gastric acid, irritate the gastric mucosa, and make the patient suffer from nausea. In addition, prolonged pain in the lumbar region may also stimulate the vegetative nerves in front of the spine, causing the patient’s gastrointestinal dysfunction and the sensation of vomiting. Vomiting is not a typical symptom of lumbar forks, if the patient vomits after lumbar forks, it is recommended to consult a doctor in time, under the guidance of the doctor to carry out targeted treatment, so as not to delay the condition.