Nevus is a pigmented nevus, the phenomenon of pigmented nevus showing coffee color around and black color in the middle may require surgical excision, which requires a specialist to make a preliminary judgment based on dermatoscopy, and pathology biopsy if necessary. Clinically, when the nevus is asymmetric, with irregular edges, color change, diameter greater than 5mm, and symptoms such as pain, itching, ulcer, etc., it usually needs to be surgically excised and pathological biopsy should be done. Therefore, when a pigmented nevus appears to be surrounded by a coffee-colored center with black color, it may need to be surgically excised. If a nevus is black with coffee color in the middle, it is recommended to go to a regular hospital, and a specialist will give you advice according to the patient’s specific situation.