There are three main reasons for pain in the arch of the foot: 1, due to inflammation and hyperplasia lesions in the arch of the foot, such as the accumulation of local inflammatory metabolites to form chronic lesions, and the gradual deposition of calcium salts over time to form calcification and hyperplasia, which stimulates and squeezes the soft tissues in the arch of the foot and easily affects the peripheral nerve, resulting in painful symptoms. 2, due to flat feet, the arch of the flat foot 3, due to excessive fatigue of the arch position formed strain, such as walking too much, after strenuous exercise, especially in the case of cold, the local metabolites such as lactic acid accumulation, also prone to pain symptoms. pain symptoms.