Urinary tract infection in children is common and recurrent especially combined with anatomical and functional abnormalities, Radiological analysis of the 68 cases of urinary tract infection who were admitted to the pediatric department of Yong Dong Severance Hospital from Apr. 1983 to Aug, 1985 were subjected in this study. The results were as follows : 1. Urinary tract infection was more common in male under 1 year of age, but increasing with age more prevalent tendency in female. 2. Clinical manifestations on admission were fever, urinary frequency, flank pain, gross hematurea and etc. 3. Urinalysiss disclosed pyuria in 60 %, hematurea in 47 %, and bacteriuria in 7%. Escheridhia coli was the most common strain and Klebsiella species, Enterococcus, Proteus species were common in descending order. 4. In the radiologic findings, the patients of refluxed cases showed more changes in the size of kidney and damage of renal parenchyme. And also they were more combined with analtom cal abnormalities. 5.VCUG findings according to the grade of reflux showed more extensive changes of kidney itself, ureter and bladder with increasing of the grade of VUR. 6. Over 6 months follow- up , the initial scarring were aggrevated and getting worse although treatment.