Generally speaking, large blood blisters after liquid nitrogen freezing can be absorbed and recovered slowly by themselves without being broken. After liquid nitrogen freezing, it is not recommended to poke it, the body’s self-recovery ability, the blood in the bubble will be gradually absorbed, and then slowly recover, need to keep the affected area clean and dry, conducive to recovery. It is recommended that patients in their daily life, maintain a good state of mind, do not stay up late as well as excessive fatigue, eat a light diet, high-quality protein diet, drink more water, eat more fresh fruits and vegetables, do not eat spicy, greasy and stimulating food, in order to facilitate the recovery of the condition. It is recommended that in the case of large blood blisters after liquid nitrogen freezing, the affected area should be treated according to the doctor’s instructions, and should not be squeezed on its own.