Lumbar squatting can not straighten up, may be a normal reaction, may also be lumbar muscle injury, lumbar disc herniation and other diseases lead. 1. Normal reaction: normal people squatting for a long time may also appear when standing straight up performance, because squatting time is too long, may cause blood circulation obstruction, suddenly stand up will increase the lumbar load, so there will be the performance of the lumbar straight up, but generally no pathological reaction. 2. Lumbar muscle injury: If you are overworked, the lumbar muscles will be damaged, and it will be difficult to stand up after squatting for a long time, and you may have symptoms such as lumbar soreness and lumbar pain. 3. Lumbar intervertebral disc herniation: the disease of the lumbar load is relatively large, the condition gradually aggravated will compress the nerve root, easy to cause neural tube stenosis, so easy to stand up in the lumbar soreness, lumbar pain, and can’t straighten up the waist of the performance. If you can’t straighten your back when you squat down, in addition to the above factors, you should also consider muscle atrophy, or lumbar ligaments are stretched. It is recommended to consult a doctor in a timely manner to clarify the cause of the disease and then follow the doctor’s instructions to standardize the treatment.