Lumbago and vomiting may be caused by digestive system diseases, urinary system diseases, and pregnancy may also have symptoms of lumbago and vomiting. 1. Digestive system diseases: spleen and stomach discomfort, gastroenteritis and other patients, nausea, vomiting and other discomforts, serious cases will cause lumbar involvement pain, lumbago and other symptoms. 2. Urological diseases: patients with kidney stones and ureteral stones will have soreness and hidden pain in the lower back, and nausea and vomiting will also occur when colic is present. 3. Female pregnancy: early pregnancy in women of childbearing age, estrogen and progesterone elevation can cause nausea, vomiting, back pain and other symptoms. If the symptoms of back pain and nausea are caused by other reasons such as lumbar spondylosis, please consult a doctor in time to have a relevant examination, clarify the cause and actively treat the symptoms.