The patient’s soreness in the left foot may be due to the patient’s frequent weight-bearing activities in the left foot, or the fatigue injury to the muscles in the left foot caused by prolonged exposure to cold, which affects the metabolism of lactic acid in the muscles and produces soreness and swelling in the left foot, and also affects normal weight-bearing activities. In addition, patients with osteoporosis of the left foot, osteoarthritis and chondritis of the left foot joints, fasciitis and bursitis of the left foot can produce soreness and pain. After this phenomenon, the patient needs to make a clear judgment, and in the treatment can take symptomatic treatment, need the patient to reduce weight bearing, can often use hot water to soak feet or oral calcium, vitamin D.