Evaluation of laboratory data was done in 103 cases of salmonella infection treated as in-patients at the Chonnam National Hospital for two years from Jan. 1981 to Dec. 1982. The following results were obtained. 1) Salmonella organisms were isolated from blood in 50.8%(97/191) of patients, and 26.1%(12/46) from stool cultures. The strains of isolated salmonella organisms were composed of 72 strains of Salmonella typhi(69.9%), 30 strains of Salmonella paratyphi A(29.1%) and 1 strain of Salmonella paratyphi C(1.0%). There were 4 strains of Salmonella typhi resistant to chloramphenicol, and 2 strains to ampicillin. 2) Positive Widal test was found in 33.8% 3) Hematological features disclosed leukopenia in 57.9%, and leukocytosis in 3.3%. Below 10g/dl of hemoglobin values were seen in 8.5% during all clinical periods. 4) Urinary protein, sugar and urobilinogen were detected in 36.3%, 3.8%, and 11.8%, respectively. Occult blood was noted in 32.5% 5) Liver function tests disclosed elevated level of transaminase(ALT and AST) in over 70% of all cases during clinical periods, and alkaline phosphatase(Alk-Pase) in about 23%.