The soreness of the caudal vertebrae in women may be due to pregnancy and childbirth, causing compression and stimulation of the caudal vertebrae area, resulting in damage to the ligaments and fascia of the caudal vertebrae area, or dislocation of the caudal vertebrae, etc., followed by deformity healing and local ischemic pain, or pain caused by aseptic inflammation. In addition, women’s caudal vertebrae pain may also be due to trauma, lumbar muscle strain, lumbar dorsal fasciitis and other factors.1, pregnancy, childbirth: during childbirth due to pressure and stimulation of the caudal vertebrae area, resulting in ligament and fascia damage to the caudal vertebrae area, or caudal vertebrae dislocation and other phenomena. Subsequently, there will be deformity healing, local ischemic pain, and aseptic inflammation resulting in pain; 2, trauma factors: may lead to ligament and fascia damage or fracture dislocation in the caudal vertebrae area, resulting in soreness and discomfort. If the fracture dislocation is not well reset and deformed healing occurs, chronic pain will be left behind. This chronic pain is mainly due to poor local blood flow and ischemia after fracture of the caudal vertebrae, resulting in sterile inflammation and chronic pain. This pain is often recurrent, and can occur under exertion, cold and other triggers, seriously affecting the patient’s quality of life; 3, lumbar muscle strain: sedentary, hard bench, cold, etc. in daily life can lead to chronic injury to the ligaments and fascia of the caudal vertebrae area, producing strain, forming sterile inflammation, and leading to local soreness and discomfort; 4, lumbar dorsal myofasciitis: humid, cold climate environment, is one of the most common causes. Wet and cold environment can make the low back muscle vasoconstriction, ischemia, edema caused by local fiber plasma exudation, and eventually form fibrofibrillitis; 5, lumbar disc herniation: acute attack of pain can be radiated to the hip, sacrococcygeal, bilateral lower limbs can have numbness; 6, other causes: relatively rare such as sacrococcygeal tumor, infection, tuberculosis and other factors caused. Women with caudal vertebrae pain should go to the hospital, do a comprehensive examination, identify the cause, and carry out symptomatic treatment according to the situation. Daily life should pay attention to conditioning, avoid cold, sedentary and other bad habits to avoid pressure on the caudal vertebrae area.