Large pores may be caused by genetic factors, loose skin, sebaceous gland secretion, skin inflammation and other reasons. 1. Genetic factors: the symptom of large pores has a genetic predisposition. If the parents have rough skin and large pores, their children’s skin condition will be affected by the genetic factors, and they will be prone to the symptom of large pores. 2. Loose skin: With age, collagen is gradually lost, the skin becomes loose, and the hair follicles collapse, which can also lead to enlarged pores. 3. Sebaceous gland secretion: increased secretion of androgen can lead to increased sebaceous gland secretion, easily triggered by pore blockage, the accumulation of follicles in the pores to support the pores, the symptoms of pore enlargement. 4. Skin inflammation: Bacteria, fungi and other pathogens infect the skin, resulting in skin inflammation, such as folliculitis, will also appear pores, mostly accompanied by redness, swelling, pain and other symptoms. There are many reasons for large pores, and it is recommended that patients go to a regular hospital to clarify the cause of the disease and treat the symptoms.