Bicycling back pain is normal in most cases, while some patients may suffer from lumbar disc herniation. 1. Normal situation: If you have back pain after cycling in daily life, most of them are caused by incorrect posture when cycling or too long cycling time, etc. The above situation may lead to fatigue injury of lumbar muscles, induce lumbar dorsal musculoskeletal fasciitis, stimulate the peripheral nerve roots, and the symptom of back pain after cycling appears. 2. Herniated lumbar intervertebral discs: Some patients may suffer from back pain after cycling due to herniated lumbar intervertebral discs, for example, during cycling, the road is quite bumpy, which leads to an increase in the pressure between the vertebrae and causes tension in the soft tissues around the vertebrae, and at the same time, it may also exert pressure on the nerve tissues, which may also cause the symptoms of low back pain after cycling. The symptoms of cycling back pain alone sometimes can not accurately determine the cause, but also need to be combined with the characteristics of the medical history, other test results in order to make an accurate judgment, it is recommended that the cause of the disease under the guidance of a doctor.