Pain on both sides of the waist is not necessarily kidney disease, pain on both sides of the waist may be due to internal diseases, such as kidney disease, or due to spinal disease or lumbar muscle strain. 1. Visceral diseases: common visceral diseases that cause pain on both sides of the waist include kidney disease or ureteral disease, such as kidney stones, ureteral stones and so on. 2. Spinal disorders: Spinal disorders may also cause pain on both sides of the waist, such as herniated disc, lumbar spondylolisthesis or spinal stenosis. 3. Lumbar muscle strain: When the muscles on both sides of the waist are overstretched, it may lead to muscle damage and form lumbar muscle strain, which leads to pain on both sides of the waist. It is recommended that patients with significant pain on both sides of the waist go to a regular hospital in time to assess their condition and receive treatment under the guidance of a professional doctor.