Squatting and standing up and dying of back pain may be related to the following reasons: 1. It may be due to an acute lumbar sprain. This disease occurs at the point in time when the patient is upright, that is, after the patient has been squatting for a long time, suddenly upright, the process of lumbar force, causing muscle strains in the lumbar region. The patient often shows pain in the lower back and holds the waist with his hands, the lower limbs do not dare to continue to step forward. 2, there may be a lumbar disc protrusion. It often manifests itself as a significant reduction in symptoms when the patient is squatting or curled up in bed, but once upright, the lumbar pain increases dramatically. The lumbar spine will protrude forward during the upright process, and the protruding disc will be in closer contact with the nerve roots, leading to severe irritation and back pain. 3. sciatica may exist. The onset of this type of disease is also characterized by pain relief when the hip joint is tucked in. But in the process of lower limb straightening, there is a significant increase in pain, and may be accompanied by lumbosacral pain.