People often ask: Should I cut my mole? When we see a mole, both doctors and patients consider it from these two aspects: first, does it affect the beauty, and second, is it malignant? There are various types of moles and different naming schemes. Simply put, they are benign skin tumors composed of melanocytes, which can be distributed anywhere in the body, but are more likely to occur on the face and neck. Because moles are mostly found on the face and neck, they inevitably become unique signs of individuals, which may have an aesthetic meaning, such as beauty moles and peach blossom moles; or they may have a “facial science” meaning, such as the “great man’s mole” on the left side of the middle of the chin. The above are good meanings. Unfortunately, more often than not, moles play the role of destroying facial aesthetics and facial features, causing some psychological burdens to aspiring men and women, and even destroying good interpersonal relationships, causing problems in employment and choosing a spouse. Then, this kind of removal based on improving the aesthetics of the appearance is necessary. + Another factor that influences our decision is whether a mole is malignant or not and whether it will become malignant in the future. The main consideration for whether to cut a mole or not is whether it will turn into a melanoma. The good thing is that there are still some clues that doctors can follow and make an evaluation and diagnosis, and it is important to emphasize that early diagnosis is equal to saving lives. However, not all patients have easy access to a doctor at all times, and moles change throughout their lives, so self-examination is especially important. Now I would like to introduce the methods of self-examination, and the first thing I would like to introduce is the principle of discrimination: 1. i.e. asymmetry, if the appearance of a mole is not symmetrical in the center, which means that the mole cells grow outward asymmetrically, then it may have malignant changes. 2, i.e. irregular border, like the border of a map, the edges are interlaced, which also means the mole cells grow outward irregularly. 3, that is, color change, the color of the mole deepens or becomes lighter, or presents different shades, the middle is deep and the edge is light; or first becomes dark and then fades to light. This is often seen when the malignant melanocytes are in the process of rapid growth and autoimmune cells are killing them. 4, that is, the size of the diameter, the diameter of moles larger than 5~6mm has a high possibility of malignant transformation. 5, i.e., getting larger or progressing, if the mole becomes larger than 5mm, or one of the changes in the above points, it is a precursor of malignant change only, and should seek medical attention in time. Moles that must be removed also include: 1.Moles that break down locally and do not heal after a long time. 2.Moles with local redness, itching, or satellite foci (multiple surrounding nevi). 3.Moles located in the often rubbing and gouging parts such as collars, soles of the feet or between the toes where the environment is harsh. Finally, in yellow people, melanoma is more likely to occur at the ends of the limbs (42%), so special attention should be paid to moles that occur on the hands and feet.