The right side lumbar pain in girls is considered to be related to lumbar muscle strain, lumbar intervertebral disc herniation, and right ovarian disease. 1. Lumbar muscle strain: this can be seen in repeated bending or when the waist is cold, resulting in injury to the muscles on the right side of the waist, causing aseptic inflammatory reaction of the myofascia, which leads to pain in the right side of the waist. 2. Lumbar intervertebral disc herniation: if the lumbar intervertebral disc is obviously protruding to the right side, it can compress the nerve root on the right side, resulting in the symptom of lumbar pain on the right side, which can be radiated to the lower limbs. 3. right ovarian disease: girls right ovary if the disease will also appear right waist pain phenomenon, such as ovarian inflammation, ovarian cysts. Girls right side waist side pain may also be related to other reasons, it is recommended to consult a doctor in time to clarify the cause of pain, and standardized treatment under the guidance of the doctor.