A lot of small pimples on the back in summer may be related to the increased secretion of sebaceous glands, the over proliferation of Propionibacterium acnes, inadequate cleansing, dietary habits, high temperature environment, etc. According to the cause of the disease, you should alleviate the symptoms through the adjustment of lifestyle habits, medication and other methods. 1. Increased secretion of sebaceous glands: Cleanliness should be paid attention to, and medicines such as benzoyl peroxide and azelaic acid can be applied to the area for treatment. If accompanied by inflammation and infection, medicines such as fusidic acid cream should also be applied for treatment. 2. Excessive proliferation of Propionibacterium acnes: you can apply topical retinoids, which can improve the abnormal keratinization of follicular sebaceous gland ducts and so on. 3. Inadequate cleaning: In summer, due to easy sweating, you need to pay attention to keeping the back area clean and hygienic, and pay attention to changing clothes in time, so as not to leave sweat and other dirt on the back. 4. Dietary habits: patients need to adjust their dietary habits, avoid eating greasy and spicy stimulating food, the diet should be light. 5. High-temperature environments: Avoid long periods of time in high-temperature environments, and wear cotton, breathable clothing. It is recommended that patients with a lot of small pimples on the back in the summer to seek timely medical attention, and strictly comply with the doctor’s instructions to carry out the appropriate treatment after the cause is clear, not self-medication.