Moles on the back usually do not need to be removed. Moles, also known as pigmented nevi, are the most common benign tumors of the skin made up of normal pigment-containing mole cells. They are usually small, have a smooth, hairless surface, and are flat or slightly elevated above the epidermis. They may be present at birth or gradually appear in the early years of life. Most moles grow slowly or remain unchanged for many years. The vast majority of pigmented moles are benign and do not have any effect on health. If the mole is large and affects your beauty or your life, you can go to a regular hospital and ask the doctor concerned to consider removing the mole. In daily life, pay attention not to stimulate, do not apply stimulating drugs, at the same time, need to pay attention to if the nevus suddenly become bigger or broken, local burning sensation and other abnormal phenomena, it is recommended to consult a doctor in a timely manner, to clarify the cause of the disease, under the guidance of the doctor standardized treatment.