If a pregnant woman has back pain after pregnancy, it needs to be analyzed according to the patient’s specific condition. In early pregnancy, most of the back pain is caused by the increase of sex hormone secretion in the patient’s body, which causes certain stimulation to the lumbar tissues and causes the symptoms of back pain to occur. When pregnant women have pelvic inflammatory disease, adnexitis and other diseases, the inflammatory stimulation can also cause low back pain, while some patients often have lumbar muscle strain due to long-term heavy physical work, which can also cause the performance of low back pain. When the patient has a lumbar disc herniation, lumbar degenerative disease and other episodes, for the local tissue is caused by a certain compression, can also cause the clinical manifestations of lumbago, need patients in the onset of the disease, timely to go to the hospital for relevant examination, clear cause, further treatment.