This study was conducted to examine the effect of fermented alcoholic feedstuff(FAF), sustained-releaserecombinant bovine somatotropin(rBST) on blood metabolites and carcass characteristics of Korean native cattle,Hanwoo. The experiment was carried at the Livestock Breeding Station in Kangwon-do with fourteen bulls withtwo groups, control and treatment. Seven bulls per each group were allocated. In control group, bulls weretreated with total mixed ration(TMR) for the whole experimental periods. In treatment group, bulls were treatedwhith TMR+FAF+rBST for the fattening period and TMR+FAF for finishing period, respectively. The results aresummarized as follows ; Blood creatinine concentration was higher in treatment group than in controlgroup(P<0.05), while cholesterol content in blood was lower in treatment group than in control group. There wereno significant differences between in control and treatment group on back-fat thickness(BFT) and rib eyearea(REA), however, MS of treatment was more improved than that of control. The frequencies of yield gradeA and quality grade 1 were 33 and 17% for control group and, 50 and 50% for treatment group, respectively,which imply higher appearances of grade A and grade 1 in treatment group than in control group. The auctionprices(won/carcass kg) were 11,145 and 11,573 won in control and treatment group, respectively, and net grossincomes per carcass were 654,408 and 1,051,542 won in control and treatment groups, respectively, which suggestthat the margin of profit between treatment and control group was 397,134 won per carcass. Overall resultsindicate that the favorable feeding system to produce high quality beef with high profit is TMR+FAF+rBSTfeeding during the fattening period and TMR+FAF feeding during the finishing period.