Many friends will appear sore feet, which is also a common symptom, it has many causes, the most common are the following: first, after excessive exercise will appear sore feet, such as friends who usually rarely move, weekend hiking, climbing after the lower limbs appear sore, related to excessive exercise; second, some young women, love beauty, especially wearing high heels, long-term standing and walking, feet will also Third, calcium deficiency, especially in some pregnant women and elderly patients can cause foot pain due to calcium deficiency; fourth, poor blood circulation, poor venous return of the lower extremities, and some neuropathy caused by abnormal sensation of foot pain. Many rheumatic immune diseases can also appear soreness of the lower limbs.