The purpose of this study was to provide basic data of nursing intervention through understanding disease pattern of pediatric patients. Data were collected from 3,016 patients who visited emergency center of I university Hospital during one year period from January to December, 1997. The results were as follows : 1. The most common type of disease was respiratory disease (26.7%). 2. According to the developmental age, toddler (35%) ranked first followed by preschooler(22.1%), infant(18.5%), schooler(16.0%), adolescent (5.6%), neonate (2.7%). 3. The proportion of males to females, male patients(59.8%) outnumbered female(40.2%) by the ratio of 1.48 ; 1. 4. Visiting patients were seasonally more frequent in spring(29.8%) and summer (29.3%) than fall or winter. 5. Comparing weekly distribution, week end involing holiday outnumbered week day(48.5%). 6. The visiting time predominattly high from 8 : 00 PM to 0 : 00 AM(29.8%) during a day. 7, The majority duration of stay at Emergency center was 1-6 hours. 8. Most patients dischrged from the emergency center in good condition(76.5%).