Women below the knee leg pain, may be related to tibial tubercle, lower limb vascular disease, gastrocnemius strain, etc., the details are as follows: 1, tibial tubercle: tibial tubercle is located below the knee joint, is the connection point between the patellar tendon and the tibia, if frequent sports or excessive exercise, will cause the tibial tubercle by the patellar tendon pull, so it will cause local inflammation, will be manifested as local pain; 2, lower limb vascular disease: such as venous thrombosis or varicose veins in the lower limb, generally can cause swelling, pain; 3, gastrocnemius strain: such as frequent running or weight-bearing activities, can cause swelling, pain in the lower leg; 2, lower limb vascular disease: such as lower limb venous thrombosis or varicose veins, generally can cause swelling and pain in the calf; 3, gastrocnemius strain: such as frequent running or weight-bearing activities, mountaineering, will cause a large number of lactic acid accumulation in the calf muscle, resulting in soreness and pain in the calf.