If the patient has back pain and the feeling of wanting to vomit, it may be due to the following reasons or mechanisms: 1, this situation may be caused by the pain is too intense, for example, in the patient has a serious lumbar sprain or lumbar fracture, may be due to severe pain, so that the patient has a smooth muscle spasm of the stomach, or emergency ulcers and other pathologies, the patient may be nausea at the same time. 2, this situation may also be due to some of the vegetative nerve stimulation, causing the lumbar vertebrae in front of the vegetative nerve stimulation, causing the above symptoms, This condition may also be caused by the stimulation of the vegetative nerves, such as in the case of severe lumbar fractures, which may lead to the stimulation of the vegetative nerves in front of the lumbar vertebrae, causing the gastrointestinal reactions mentioned above. 3. This condition is also commonly seen in the presence of visceral-related lesions, such as in the case of pancreatitis, kidney stones, which may cause the patient to experience back pain, vomiting, and other symptoms. This may also lead to back pain and vomiting.