Ulcers on the tongue at the slightest exposure to cold may be related to recurrent herpes stomatitis or to factors such as recurrent oral ulcers. 1. Recurrent herpetic stomatitis: It is an infectious disease of the oral mucosa caused by herpes simplex virus infection. Its predisposing factors are mostly found in localized irritation, cold and sunlight exposure, etc. Therefore, tongue and oral mucosal ulcers may appear after a slight cold and infection with herpes simplex virus. 2. Recurrent oral ulcers: also called recurrent aphthous ulcers, is the most common oral mucosal disease, the etiology is more complex, mostly due to immune factors, genetic factors, environmental factors and so on. A little cold will make the body resistance decline, easy to recurrent oral ulcers, can be manifested as a little cold tongue and its mucous membrane is easy to ulcer. A little cold, tongue ulcers, there may be other reasons, should be timely consultation, improve the examination, clear cause, in the guidance of professional physicians standardized treatment.