The reasons why patients have tired soles are as follows: 1, injury or strain of plantar muscles: for example, frequent weight-bearing walking, going up and down stairs, mountaineering, hiking, or excessive sports can cause inflammation and strain of plantar muscles, and inflammation of plantar fascia, which can lead to protective spasm and weakness of plantar muscles, and localized pain, soreness and swelling in the area of the plantar fascia.2, water Electrolyte balance disorder: for example, in hypokalemia, generalized weakness will occur, especially the lower limb weakness is heavier.3. Ankle canal syndrome: when the cervical nerve is compressed by the ankle support band, skin sensory abnormalities in the area innervated by the cervical nerve will occur, including numbness and discomfort of the soles of the feet, and it can also be manifested as plantar fatigue.