Gastrointestinal (GI) symptoms in children and adolescents are influenced by diverse psychiatric components such as psychosocial stresses, familial environment, school-related situations, and comorbid psychiatric conditions. Absolutely psychiatric symptoms of pediatric patients are also affected by problems of GI system. Lots of symptoms including anorexia, dyspepsia, nausea and so on are commonly originated from either GI or psychiatric causes or both. Sometimes the negative interactions between GI and psychiatric problems aggravate the severity and eventually decline the functions of children and adolescents with GI symptoms. We summarized the common GI and psychiatric conditions which have GI and psychiatric associations. To a clinician who manages pediatric GI disorders, psychiatric considerations can be beneficial to understand the clinical manifestations of patients and to find the way to relieve them. This short and somewhat superficial review may help to have a bird's-eye view on this topic.