How many days to recover from lumbar stretching depends on the degree of muscle tissue damage and treatment, as short as 1 to 2 weeks, as long as 3 to 4 weeks. 1. Lumbar stretch usually refers to the lumbar soft tissue sprain, muscle or ligament can appear different degrees of damage. If the muscle damage is mild, activity limitation is not obvious, timely treatment, such as braking, physiotherapy hot compresses and medication such as celecoxib capsules, etc., the treatment can be recovered in 1 to 2 weeks. 2. If the local ligament and soft tissue injury is serious, the lumbar spine activity is also obviously limited, and even unable to walk in severe cases. Usually, bed rest for 3～4 weeks, together with the use of medication such as Loxoprofen sodium and Ibuprofen, etc. are needed for recovery. If the symptoms do not improve or worsen, it is recommended to go to the hospital to take X-rays and MRI films to clarify the degree of recovery. During the treatment, it is recommended to take bed rest, apply hot compresses on the local area, and take oral nerve-nourishing drugs such as methylcobalamin as prescribed by the doctor.