The foot long like blisters like hard things to consider may be callus, corns, plantar warts and other diseases. 1. callus: callus is mainly local long-term friction or pressure caused by the thickening of the skin stratum corneum, the patient will appear localized skin thickening, roughness, there is a hard raised plaque. 2. Chicken eye: Chicken eye is caused by long-term friction and pressure on the foot, manifesting itself as a clear cuticular proliferation, yellow or yellowish, like the size of a soybean, with obvious pain symptoms after squeezing. 3. metatarsal warts: foot long like blisters like hard things may also be metatarsal warts, is caused by human papillomavirus infection, the pressure site will appear yellowish or brownish-yellow plaques, suggesting that there can be a burr-like hyperplasia. The reason for the blisters on the feet is more, it is recommended to consult a doctor to check, clear diagnosis.