A woman’s leg pain below the knee is no different from that of a normal person’s leg pain below the knee, and the possible diseases are bone and joint infections, osteoarthritis, lower extremity vascular diseases, lumbar spine diseases, and so on. 1. Bone and joint infections: such as septic arthritis of the lower limbs, septic osteomyelitis, soft tissue infections. 2. Osteoarthritis: such as rheumatoid arthritis of the lower limbs, rheumatoid arthritis, osteoarthritis, gouty arthritis, neuropathic arthropathy, etc. 3. Lower extremity vascular diseases: such as lower extremity venous embolism, arterial occlusion, varicose veins, etc. 4. Lumbar spine diseases: lumbar disc herniation, lumbar spondylolisthesis, lumbar spinal stenosis and so on. In addition to the above diseases, diabetic foot, knee ligament injury, knee synovitis, trauma, etc. may also cause leg pain below the knee. It is recommended to go to the hospital in time to improve the examination, clarify the cause of the disease and give targeted treatment.