The blistering of hemangioma after freezing is a normal phenomenon, there is no question of good or bad. Hemangioma is a kind of congenital developmental abnormality, which can be found at birth, and it can grow in the head and face as well as other parts of the body, and in serious cases, it can even lead to ulceration and bleeding, so early treatment is recommended. When the blisters of hemangioma are small or shallow, no special treatment is needed, and the blisters can be absorbed slowly. When the blisters are big, you can use sterilized needles to puncture the blisters, and use iodine pomade to sterilize the blisters locally, and keep them dry and clean. When you find hemangiomas needing cryotherapy, it is recommended that you need to consult the dermatology department of a regular hospital, and some patients may need multiple treatments.