1.Affecting beauty: most hemangiomas are abnormal in color and make the skin surface uneven, which will affect the beauty if they grow on the face and other exposed parts.

2. Causing infection: hemangiomas are easily broken and bleeding when they are stimulated by friction or foreign objects, which will cause infection and make the wound not healing for a long time.

3. Causing deformity: the trunk and limbs have more bones and tissues, the occurrence of hemangioma will destroy the surrounding tissues, affecting the function of the body, and in serious cases, causing limb deformity.