The main reasons for women’s back acne can be divided into the following aspects: 1, hormone level reasons, generally before and after the period hormone level will change, so before and after the period, this kind of acne is certainly directly related to the hormone level. 2, the main reason can not be ruled out and sebaceous glands secretion, that is, more oil, generally in the front chest, back and face is the distribution of sweat glands, oil is certainly more. Therefore, in the treatment of back acne, first of all, we must change our bad life style, such as staying up less late, and at the same time eat less spicy, sweet and fried food. For back acne, you can apply topical fusidic acid or erythromycin, twice a day for anti-inflammatory treatment.