Cherries can be eaten with canker sores, but it is important to realize that eating cherries with canker sores does not have any therapeutic effect. That is to say, patients with mouth ulcers, as long as they can tolerate the pain of mouth ulcers, there is no direct connection between eating cherries. Cherry as a kind of delicious fruit, rich in a large number of vitamins, especially containing iron especially much, clinically some vitamin or trace element deficiency of oral ulcers, may be for this type of oral ulcers to eat cherries will have supplemental nutrients, relieve the role of ulcers, but with the current clinical observation, oral ulcers is considered to be a multifactorial influence on the oral mucosal lesions. In addition to nutritional deficiency factors, including immunity, genetics, hormones, endocrine, these factors are related to mouth ulcers, so multi-factors caused by mouth ulcers, single by eating cherries is certainly not a direct improvement.