Second-degree burns are serious and are classified into superficial and deep second-degree burns. Superficial second-degree burns manifest as local redness, swelling, pain, and blister formation. Deep second-degree burns primarily affect the dermis, resulting in tissue necrosis and nerve damage, which are indicated by local pain and abnormal sensations. For both superficial and deep second-degree burns, it is necessary to immediately rinse the affected area with running cold water for at least half an hour, or until the pain eases. Afterward, it is essential to go to a hospital for thorough disinfection with iodophor to prevent infection. For deep second-degree burns, debridement is also necessary, and skin grafting may be required to facilitate tissue recovery. However, certain sequelae may remain, so it is crucial to follow the doctor's instructions to change dressings regularly. Additionally, attention should be paid to diet; avoid spicy, stimulating, and fermenting foods. Drinking more water and consuming fresh vegetables and fruits to supplement vitamins, as well as high-protein and high-nutrient foods, are beneficial for recovery.