The pain on both sides of the waist when moving is mainly considered to be related to muscle strain, inflammation, trauma or lumbar spine lesions. 1. Muscle strain: usually if you often bend over and bear weight or strenuous exercise, the muscles on both sides of the waist continue to contract, it is easy to produce muscle strain problems, which triggers the symptoms of pain on both sides of the waist when you move. 2. Inflammation: If inflammation occurs in the two sides of the waist, such as myofasciitis, the stimulation of inflammation is easy to trigger the symptoms of pain, and the pain will be more pronounced in the activities. 3. Trauma: If the parts on both sides of the waist are damaged by the impact of external forces, or if the improper exercise in general causes strains on the soft tissues of the surrounding muscles, the pain on both sides of the waist is easy to appear in the activity of the waist. 4. Lumbar spine lesions: when lumbar spine lesions, such as lumbar disc herniation or lumbar spinal stenosis, as well as lumbar spine small joints disorders, etc., in the activities of the lumbar spine is prone to cause pain on both sides of the lumbar spine symptoms, and even produce lumbar spine activities are limited. Usually pay attention to maintain a good posture, do not often stooping and heavy labor, if the pain is more serious, need to be under the guidance of a professional physician targeted treatment.