A statistical study was performed on new outpatients. The total number of new outpatients in 1986 was 8,174 (male: 5,177, female: 2,997) and the male to female ratio was 1.73:1. They had urogenital diseases definitely diagnosed (7,043), urogenital diseases undefinitely diagnosed (689), no diseases (357), and diseases other than urogenital (85). Thirty percent of the outpatients were referred to us by other sources. The number of operations on new outpatients was 182, circumcision, resection of condyloma and vasectomy were representative. The peak of the age distribution was in the thirties for males and in the twenties for females. A statistical study was made on new outpatients according to the international disease classification. There were 109 malignant (urogenital) tumors (1.4%). The major diseases of the new outpatients were cystitis (acute or chronic: 21.4%), upper urinary tract stone (16.8%), prostatitis (14.1%), and benign prostatic hypertrophy (11.3%). In males the major diseases were prostatitis, upper urinary tract stone, benign prostatic hypertrophy, balanoposthitis, phimosis and in females they were cystitis, upper urinary tract stone, pyelonephritis, renoptosis and neurogenic bladder. We conclude that our hospital plays a major role as a private urological hospital.