In general, it is feasible to eat leeks for mouth ulcers, but you need to pay attention to the cooking method. 1. The specific cause of mouth ulcers is still unclear, or with genetic, immune deficiency, stress, vitamin deficiency, trauma and other reasons, and leeks are a common ingredient, and will not aggravate mouth ulcers, usually can eat, but raw leeks are more pungent, in order to avoid stimulation of the ulcers, aggravate the pain, it is recommended that leeks should be cooked and then eat, do not eat raw. 2. Although leeks can not cure, but some of the nutrients contained within the human body is beneficial, such as leeks contain vitamin A, B, C, E, calcium, phosphorus, potassium, magnesium, as well as a small amount of zinc, selenium, and other nutrients, these substances are needed to maintain the body’s life activities. Although oral ulcers have self-limiting characteristics, if left untreated, they are also prone to recurring attacks, so patients need to follow the doctor’s instructions and actively cooperate with the treatment.