Crohn disease is a chronic transmural inflammatory disease that may involve any portion of the gastrointestinal tract. An increased incidence of Crohn disease in the general population has been reported, along with a greater than threefold increase of Crohn disease in children under the age of 16 years noted in a recent study. Crohn disease may be seen as early as infancy, but the most common pediatric age of onset is during the teenage period. We experienced a case of Crohn disease in 6 year old male child complained abdominal pain, oral aphthous ulcers, arthralgia, anorexia, and growth failure. A brief review of related literature is also presented.