After the warts are frozen off, you can observe the skin through the naked eye, if there is no growth, no bleeding spots, etc., you can basically judge that the warts have been cured. You can go to the hospital for a follow-up if necessary. Cryotherapy is a common treatment for common warts, and sometimes several sessions are needed to achieve the goal of treatment. You can observe the skin for new proliferative damage and bleeding spots. If the affected area is smooth and flat, with no uneven wart-like growths and no bleeding spots on the skin surface, you can basically tell that the warts have been cured. In addition, if necessary, you can also go to the hospital dermatology department, by the doctor through the dermatoscope enlargement of the skin lesions, for a more detailed observation of the judgment. The actual warts can be frozen off, but the virus may still be present in the body, and there is still a chance of recurrence. If you have wart-like growths on your skin, you need to be alert to the possibility of recurrence, and you should seek professional treatment in time.