In the past few years, more and more patients are choosing photorejuvenation because it provides good help to the beauty lovers nowadays, but it is not omnipotent. Beauty seekers should have a proper understanding of photorejuvenation and know the indications to avoid regrets of not achieving the expected results. The technology of photorejuvenation uses intense pulsed light: a continuous multi-wavelength non-coherent light with multiple wavelengths. The principle of generation is to focus a beam of intense light and wave off the light below a certain wavelength with a specially designed filter. The special wavelengths of intense light suitable for the treatment of skin disorders are retained. The shorter wavelengths of the intense pulsed light output are preferentially absorbed by the pigments in the skin and the hemoglobin in the blood. Without destroying the normal skin, the blood vessels are coagulated and the pigment masses or pigment cells are destroyed and decomposed, thus achieving the effect of treating capillary dilation and pigment spots. While longer wavelengths act on deeper skin tissues. The photothermal and photochemical effects cause the collagen and elastic fibers of the skin to rearrange and restore elasticity, thus achieving the therapeutic effect of eliminating or reducing wrinkles and reducing pores. It is easy to take care of skin rejuvenation after the procedure and no need to take a vacation. The output wavelength of intense pulsed light is wide. Therefore, it has a wide range of indications. It has a selective treatment effect, and the treatment area is large, the treatment is rapid, and there are few adverse reactions. Therefore, it has greater advantages. It can treat a variety of skin disorders, commonly: Type I photorejuvenation: ① pigmented lesions: freckles, hyperpigmentation, pigmented spots caused by photodamage: ② benign vascular lesions: capillary dilation, skin heterochromia, and red spots after skin resurfacing. Type II photorejuvenation: involves changes in epidermal and dermal tissue structure. Such as wrinkles, enlarged pores and obvious elastin fiber changes. The following cannot be used: 1. Inflamed or pus-filled wounds are not suitable for treatment 2. Those who take oral or topical retinoids and those who use topical blemish removal products are recommended to start treatment after 3 months of discontinuation. 3.Patients with solar dermatitis, scar body, pregnant women, patients suspected of skin cancer, and patients with immune deficiency should be used with caution. Photorejuvenation course, usually takes 4-6 times, and there are individual differences in efficacy. It has better efficacy for freckles, in removing facial pigmentation spots, capillary dilation and facial erythema. After the treatment, fine wrinkles, skin texture, skin laxity and pore size will also be significantly improved, but it cannot be done once and for all, let alone make people return to their old age, so daily care and skin maintenance are still necessary, during the process of receiving treatment. It is very important to avoid sun exposure and sun protection. Occasionally, purpura, blisters and hyperpigmentation occur. Purpura and blisters recover quickly and hyperpigmentation usually takes 3-9 months to fade. Photorejuvenation has been widely recognized by scholars and is widely used in clinical practice, although the treatment itself is double-sided. Therefore, those who undergo the treatment should report appropriate expectations and choose carefully according to the actual situation.