Everyone has moles of varying sizes, and as the economic level continues to rise and the level of technology continues to develop, people’s desire to be beautiful continues to be fulfilled and becomes more and more urgent. Many people, especially young people, will take the initiative to go to cosmetic surgery clinics, hoping to remove the “black spots” that they consider “unsightly”. With the coming of Chinese New Year and winter vacation, many people, including students and white-collar workers, will take advantage of their vacations to go to cosmetic surgery clinics. But the question is, how much do we know about the things we have long ignored? How much do we know about the dangers of blindly removing moles and the warnings they give? What we usually refer to as pigmented nevus, also referred to as “colored nevus”, “spot nevus” or “nevus”, is the most common benign skin tumors consisting of normal pigmented nevus cells, occasionally also found on the surface of mucous membranes. It is the most common benign tumor of the skin, and is occasionally seen on the surface of mucous membranes. The color of nevus is mostly dark brown or black, and there are also some colorless nevi called “colorless nevi”. There are many types of nevi, which can be born or acquired. As for the method of removing moles, it is easy to think of laser. Prof. Ouyang said, “Removing a mole with a laser is often just ‘removing’ it with the naked eye, but because there are still invisible and immature mole cells around the mole, it is easy to remain and recur, or remove it completely and leave an indented scar, which will eventually need to be removed by surgery. In addition, the laser will stimulate the mole cells, which may increase the probability of malignant changes in the mole. Therefore, we are more in favor of surgical removal, which is thorough and safe. Perhaps many people are worried about the obvious scar after surgery, but clinical practice has proved that surgical removal of moles will be consistent along the skin lines or expression lines, and the postoperative scar is extremely inconspicuous, which is not visible to the onlookers at all; only a few people with keloidal physique will be left with a scar.” In the clinic such cases are not a few, experts would like to remind that although the rate of malignant nevus is very low (about two out of 100,000), once malignant change occurs, the consequences are very serious. To distinguish the difference between common nevus and malignant melanoma, these points can be judged: firstly, common nevus is symmetrical in both halves, while malignant melanoma is asymmetrical in both halves; secondly, the edge of common nevus is smooth, and the boundary with surrounding skin is clear, while the edge of malignant melanoma is untidy, jagged, and the surface is rough, with scaly or flaky flakes, and there is sometimes seepage of liquid or blood, and the foci are higher than the skin; thirdly, common nevus is usually brown, brown, or brownish, and it is usually brown, brown, or brown, brown, or brown. , ordinary nevi are usually brown, black or tan, while malignant melanoma will be mixed with pink, white or blue-black on the basis of tan or brown, such as nodular malignant melanoma will be blue-black or gray; and finally, the diameter of ordinary nevi is usually less than 5 mm, while the diameter of malignant melanoma is greater than 5 mm. “Sometimes it is difficult to distinguish a poorly structured nevus from an early malignant melanoma by visual observation alone; therefore, suspected lesions should be promptly examined to obtain a pathologically confirmed diagnosis.” To summarize, we must pay special attention to these signs of malignancy: slight local itching, burning and pain; rapid increase in the size or deepening of the color of the mole; the occurrence of depilation and scabbing, surface breakage, bleeding, and the formation of ulcers; the appearance of satellite dots, radiating black lines, and rings of melanin in the skin around the mole; and the enlargement of lymph nodes in the drainage area at the site where the mole is located. There are a large number of people who, as mentioned above, ask for removal of moles in order to make their face look more “fresh” and beautiful, or they believe in physiognomy and ask for removal of moles for the sake of the so-called “driving away evil and bringing good fortune” or “broadening the way of wealth”. Or they believe in face reading and ask to remove moles for the so-called “good luck” or “prosperity”. Prof. Ouyang suggests that if these people really have the desire to remove moles, they should also go to a regular cosmetic surgery clinic for consultation and treatment, and should never spot moles on the street, or take corrosive substances to spot moles or scratch and dig at will. Clinically, Prof. Ouyang often encountered casual mole removal people to seek help, they lightly leave scars and deformities, or lead to malignant nevus and life-threatening, lessons learned from the painful, must be warned.