1. Generally, benign nevus has little influence on the body, so it can be removed. Some people are superstitious, saying that the location of moles may affect their luck. Some people simply want to get rid of moles for the sake of beauty.

2. Congenital moles are likely to be malignant, so we should pay special attention to the technique, as well as moles with uneven and irregular distribution. We should also pay attention to moles covered by nails, and moles growing on the extremities are likely to become malignant and should be removed as soon as possible.