The formation of red marks after laser treatment has not receded in most cases is a normal phenomenon, generally about 3 months after the treatment can be self-recovery, it is recommended to pay attention to daily sunscreen moisturizing; if more than 3 months has not receded, it is recommended to regular hospitals to standardize the treatment. After laser treatment, red marks often appear after the skin lesion scabs fall off, usually appearing in a larger area after peeling laser treatment, such as carbon dioxide laser or erbium laser, laser energy is larger and has a peeling effect on the epidermis. Red marks are mainly due to the skin barrier is not restored, the skin is thin, subcutaneous neovascularization is more, generally 1-3 months the skin structure to return to normal, during the period of time need to strictly sunscreen, reduce local stimulation, avoid spicy and stimulating food. If the skin has not recovered after 3 months, it is recommended to go to a regular hospital, ask a specialist to evaluate and choose photorejuvenation, dye laser and other treatments according to the situation. If red marks form after laser treatment, it is recommended to go to a regular medical institution in time and follow the advice of specialists to carry out standardized care and treatment.