Gum ulcers not well for a month need to be treated according to its causes, such as mechanical stimulation, malnutrition, periapical inflammation, etc., after a clear diagnosis, choose general treatment, drug treatment, root canal treatment and other ways. 1. Mechanical stimulation: Eating too sharp food, inadvertently cut the gums, can cause gum ulcers, if not treated in time, can lead to a month did not get well. Treatment should be based on soft food, avoid spicy food stimulation, while the local use of cediriodine tablets to improve the symptoms. 2. Malnutrition: Inadequate nutritional intake can cause recurrent ulcers, thus leading to gum ulcers for a month. Treatment should pay attention to diet and nutritional intake of balanced, not picky, partial food, can be combined with the compound borax gargle to promote the recovery of the condition. 3. apical periodontitis: inflammation of the gums can cause gum ulcers for a month, the phenomenon of the need for root canal treatment, while taking anti-inflammatory drugs as prescribed by the doctor, such as amoxicillin, azithromycin. Gum ulcers for a month not good for many reasons, it is recommended that patients go to the hospital in a timely manner, after a clear diagnosis of compliance with the doctor’s instructions to take standardized treatment, the above drugs should be used under the guidance of a doctor, can not be used indiscriminately.