To make better clinical diagnosis, authors reviewed 9 patients of nonchromosomal multiple malformation disorders with psychomotor retardation, who were evaluated at pediatric department of Yeungnam University hospital for recent 2 years. We could make clinical diagnosis in 5 patients out of 9 as Aarskog syndrome, Beckwith-Wiedemann syndrome, Hallermann-Streiff syndrome, Rubinstein Taybi syndrome and Weaver syndrome. But even in diagnosed cases, there were many discrepant findings in comparison with typical cases of reference literatures and family history was positive in only one case. Moreover we could not make diagnosis in 4 patients. Therefore we think it is necessary to make a survey of unique pattern, incidence, distribution and etiologic factors of malformation disorders in our country by geneticist and pediatrician as well as to improve the laboratory aids for better diagnosis and genetic counceling.