Summer cheilitis is commonly caused by actinic cheilitis, as the skin on the lips is delicate. During summer, strong sunlight and high UV intensity can cause inflammation of the lips, leading to dryness, peeling, or swelling. It is advisable for patients to protect themselves by wearing masks or using sun-blocking umbrellas when going out to effectively prevent direct UV exposure and reduce lip trauma. Additionally, patients should be cautious about consuming certain foods in the summer, such as cold drinks that may contain a lot of colorants, which could also lead to allergic reactions on the lips. Therefore, it is recommended that patients pay attention to their lifestyle and diet.