Black nevus, medically called pigmented nevus, can be divided into congenital and acquired pigmented nevus, and can be divided into junctional nevus, mixed nevus, and intradermal nevus according to the pathology; red nevus, medically called cherry angioma, is also called senile angioma because it occurs mostly in the elderly. Generally speaking, junctional nevi are hardly protruding from the skin and are hairless; mixed nevi are more elevated than junctional nevi; and intradermal nevi are mostly hemispherical and elevated on the skin surface and may have hair on them. A special type of pigmented nevus is a congenital pigmented nevus that covers most of the trunk and has black hairs on it, called “animal skin nevus”. Geriatric hemangiomas gradually increase with age (if you don’t believe me, take off your clothes and see for yourself), about every elderly person over 70 years old has some geriatric hemangiomas, and those around 30 years old may also have a few, which are more appropriately called “cherry hemangiomas” at this time. Pigmented nevus originates from melanocytes in the skin epidermis and is a benign tumor; senile hemangioma is the most common type of vascular abnormality and is also a benign tumor. Pigmented nevus can occur in any part of the body, including scalp, palmoplantar, genital mucosa, nails, etc. It also has special types called “halo nevus”, “blue nevus”, “split nevus” and “juvenile melanoma”. “Age-related hemangiomas are most commonly found on the trunk, but rarely on the hands and feet and face. Very few pigmented nevi can malign into melanoma, especially palmoplantar and finger (toe) nail are the most common, which is seriously life-threatening; senile hemangioma is only a vascular abnormality, without any possibility of malignant transformation. I think the basic principles of mole removal are: it is best not to spot moles (laser, liquid nitrogen freezing, electric cautery, etc.), it is best not to spot moles (spotting is not clean, leaving scars, provoking mole cells, etc.), it is best to surgically remove them, it is best not to spot moles several times if you can spot them once, and it is best to surgically remove pigmented moles in the palmoplantar area instead of spotting them. If a pigmented nevus suddenly increases in size, easily breaks down, bleeds, has unclear borders, or has uneven color, it should be removed surgically and undergo pathological examination in time to exclude the possibility of malignant transformation. Aged hemangioma is not harmful to the body and does not require treatment. It can also be treated by electric drying method and intense pulsed light and long pulsed Nd:YAG laser, usually also for aesthetic requirements (the cosmetic needs of the elderly are also becoming more and more vigorous and should not be underestimated).