In order to remove moles without leaving scars, you need to do the following aspects, including the choice of treatment hospitals, treatment methods and post-operative care and so on. 1. The choice of treatment hospital. The skillfulness of the surgeon is the key to the success or failure of the surgery. Comparatively speaking, the qualification of the surgeon can be guaranteed in public hospitals with strong faculties. 2. Choice of treatment method. Commonly used mole removal methods include medication, laser treatment and freezing treatment, etc. Each method has its own disadvantages and advantages, which need to be chosen according to the actual situation of the individual. Although medication is convenient, it will cause corrosion to the surrounding skin if it is not operated carefully during the treatment process. Laser treatment is relatively safe and suitable for the treatment of a large number of small pigmented moles. Cryotherapy is safe, less bleeding, easy to leave scars and infections. 3. Post-operative care. Pay attention to keep the skin of the operation site clean, avoid too much stimulation, and avoid getting wet. Try to keep a light diet, avoid spicy and greasy food. Strictly follow the doctor’s instructions to use medication, such as anti-infective drugs (mupirocin ointment), promote epidermal cell growth drugs (human epidermal growth factor gel) and inhibit the formation of scars of drugs (polysulfonic acid mucopolysaccharides cream) and so on. Because individuals are different, it is important to consult a doctor to determine the best course of treatment for each case.