Angular cheilitis, commonly referred to as cracked corners of the mouth, can occur when a person is experiencing internal heat or lacks certain vitamins or trace elements. It is recommended that patients rest more and appropriately supplement their diet with vitamins and trace elements to enhance their immune response, which can aid in the repair of cracked corners of the mouth. Therefore, patients must pay attention to adjusting their lifestyle and dietary habits, get plenty of rest, engage in some outdoor activities, and relax their mind. Additionally, it is beneficial for patients to consume fresh vegetables and fruits and supplement with vitamins and trace elements as needed, which can significantly aid in the recovery from angular cheilitis. Patients should also drink plenty of water and maintain good oral hygiene habits.