Back pain and vomiting may have the following causes: 1, may be due to serious soft tissue contusions, fractures, etc. in the back or injury to the chest cavity, which can lead to back pain and back pain and vomiting due to excessively severe pain with digestive system irritation. 2, may be caused by visceral lesions, such as patients with pancreatitis or angina pectoris and other diseases, may have upper class diseases If there is pain in the lower abdomen or pain in the perineum, priority should be given to stones in the urinary system, for example, kidney stones will not only have symptoms of renal colic, but also pain in the lower back and nausea and vomiting.