The pores are large and have blackheads mainly because the sebaceous glands secrete a lot, sebum and shed cells accumulate in the hair follicles, causing the pores to be blocked and passively propped up, which in turn causes the sebum exposed to the air to oxidize and turn black, forming blackheads. Therefore, the pores should be unclogged and control the secretion of sebaceous glands to deal with the two aspects, the following methods are commonly used: 1, strengthen the cleaning: you can use oil control skin care products to reduce the accumulation of oil, and wash your face with warm water. The specific practice is to foam the cleansing products and then apply to the face, fully massage, about 3 minutes, and then wash and dry to help unclog the pores. In more serious cases, you can use topical Vital Acid preparations under the guidance of a doctor, such as Vital Acid cream, Adapalene gel, etc., applied locally to unclog pores and reduce sebum secretion; 2, medical beauty: fruit acid or salicylic acid peeling such as chemical peeling, can remove the aging stratum corneum, accelerate skin metabolism, have a certain effect of convergence of pores and improve skin quality. Strong pulse light treatment can improve facial roughness, dull skin and large pores, and can promote collagen production to make the face full and shiny; 3, regulate lifestyle: patients should eat a healthy diet, avoid eating too much greasy food, spicy and stimulating food, so as not to increase oil secretion; at the same time, drink more water, eat more vitamin-rich vegetables and fruits, do not stay up late for a long time to avoid causing endocrine disorders, so that Skin condition further decline, to ensure sufficient sleep, but also pay attention to appropriate exercise.