Eating sweets in moderation is not harmful to the skin, but eating sweets in excess and for a long period of time can lead to increased sebaceous gland secretion and dry skin. First of all, eating sweets regularly will lead to excessive sugar intake in the body, which will lead to excessive insulin secretion as well as increased estrogen. Excess sugar in the body is converted into fat and endocrine disorders, which increase sebaceous gland secretion, leading to enlarged pores, pimples and acne. Secondly, excessive sugar intake will lead to glycation of collagen, accelerating skin aging and making the skin dull and lack of luster. Moreover, eating sweets for a long time will also make the skin PH value inclined to acidic, not only make the skin more sensitive but also affect the repair function of the skin, easy to breed bacteria and mites, thus causing skin inflammation. Therefore, in daily life should pay attention to moderate consumption of sweets, to achieve a balanced diet, to ensure dietary diversity, avoid long-term, excessive consumption of sweets.