Angular cheilitis is a very common clinical oral disease and is also a type of stomatitis. There are many causes for this disease; it involves some bacterial infections, but most cases are due to malnutrition or improper nutrient absorption according to the patient's condition. When angular cheilitis occurs, it is recommended that patients pay attention to local oral hygiene and avoid frequently stimulating the area with hands. Applying some aloe vera gel can also help as it has anti-inflammatory and analgesic effects. In cases of severe angular cheilitis, it is advised that patients visit a hospital and under the guidance of a doctor, use anti-inflammatory and antibacterial medications. Additionally, in terms of diet, it is important to increase the intake of vitamins and consume more fresh vegetables and fruits, which can significantly aid in improving angular cheilitis. (The use of medications should be conducted under the guidance of a professional doctor.)