The blood bubble hardened after freezing metatarsal warts belongs to the recovery period of normal surface crust phenomenon, if not accompanied by local redness, swelling and heat pain, can not worry, let it naturally fall off can be. 1. Clinical use of liquid nitrogen freezing treatment of plantar warts, liquefaction of a large number of heat absorption to kill the local sick area cells. However, if it is accompanied by inflammation such as redness, swelling, heat and pain, it is recommended to consult a doctor in time to check the specific recovery situation. 2. During the freezing treatment of plantar warts, pay attention to keep the wound clean, avoid the wound touching water and too much activity, do not scratch to avoid causing local breakthrough infection. The actual warts can be found in a number of different places, including the home, the home, the home, and the office. The actual warts will be the most important part of the body’s life, and it’s also the most important part of the body’s life, and it’s the most important part of the body’s life.