The causes of small black spots on the face include moles, post-acne discoloration, freckles, etc. Treatment needs to be tailored to the cause of the disease, including medication and physical therapy. 1. Nevus: If it is a dark pigmented nevus, there is no need for special treatment at this time, but for those who have high cosmetic requirements, they can be treated with laser surgery. 2. Post-acne hyperpigmentation: If the dark spots caused by acne are post-inflammatory hyperpigmentation, then medication such as retinoic acid cream and cumene glycoside ointment can be given. 3. Freckles: it is scattered and symmetrically distributed brown spots on the face, which should pay attention to sun protection and moisturizing, and combine with strong pulse light, picoseconds and other physical treatments if necessary. Finally, the phenomenon of long black spots on the face, please consult a doctor in time, the above drugs need to follow the doctor’s instructions.