The pore size is related to genetic skin type, skin oiliness and long-term stimulation. In this case, we should pay attention not to over-wash, we can take oral salvianolone and vitamin B6 to relieve oiliness, wash face with warm water every day, and apply vitamin A acid cream at night, such as adapalene gel and vitamin A acid cream to reduce facial oiliness. In addition, you can also combine photorejuvenation or fractional laser treatment with topical hyaluronic acid gel. Acne pits are depressed scarring, it is recommended to go to the hospital dermatology department for fractional laser treatment with topical growth factor gel, which is done once a month and needs to be done 3-6 times. For deeper pits, it can be combined with skin grinding and then fractional laser treatment.