Arm pore clogging and insufficient skin cleansing, sebaceous gland secretion, follicle opening keratinization abnormality, perifollicular keratosis, etc., the feasibility of general treatment, medication and so on. 1. Insufficient skin cleansing: If it is clear that insufficient skin cleansing leads to dirt retention and pore clogging, skin care should be strengthened in the near future by choosing mild bathing products and avoiding scratching the local skin with hands. 2. Sebaceous gland secretion, follicle opening keratinization abnormal: due to daily spicy stimulation, greasy food, often stay up all night and so on. You can follow the doctor’s instructions to use topical adapalene gel, retinoic acid gel and so on. Attention should be paid to improve living habits, light diet. 3. Keratosis pilaris: Usually, keratosis pilaris does not need treatment, if accompanied by other uncomfortable symptoms, you can follow the doctor’s instructions for external use of 0.1% retinoic acid cream, 3% ~ 5% salicylic acid ointment and other drugs to keratinization or dissolution of keratin, which can improve the skin condition; part of the patient can be appropriate daily use of moisturizers, which can help to alleviate the phenomenon of dry skin. It is recommended that arm pore clogging medical examination, if it is clear that the disease is caused by, can follow the doctor’s prescription medication, do not self-medication. Daily attention to arm skin care, the correct choice of bathing products, reasonable use of moisturizer, should also avoid sun exposure to the skin.