Toenail pain in the foot, may be caused by the following aspects: 1, may be the groin infection, usually the nail groove on both sides of the toenail inflammation, because of accidental kicking or nail clipping, resulting in epidermal injury caused by bacterial invasion of the nail groove, a long time to appear bacterial infection. Usually will be manifested as the place of the nail groove has red, swollen, pain, serious and even pus secretion. 2, may be the toe nerve inflammation caused by the toe neuralgia, thus causing pain in the place of the toenail. 3, with the trauma has to do with, if the toenail, toes accidentally kicked or to the heavy object smashed, will also cause localized toenail place of the pain.