The possibility of feed-lot feeding of Korean cattle was studied. A total of 32 cattle consisting eight steers weighing 126 to 220㎏ and twenty four heifers weighing 195 to 216㎏ were grouped and subjected to the experiments. Experimental cattle were divided into four groups as follows: $lt;표생략$gt; Group A cattle were raised in Yongin, Kyeonggi Do and the rest of cattle were raised in Seosan. Choongchungnam Do for a period of 265 days ranged from April 30, 1972 to January 20, 1973. The experimental results obtained were summarized as follows: 1. Average daily body gain of Group A cattle was 1.04㎏. Group B, C and D showed 0.54㎏, 0.29 and 0.34㎏, respectively. Such experimental data were obtained 24 pregnanted heifers were included from June to October, 1972. 2. Feed consumption, in terms of DCP and TDN, required per ㎏ body gain of the Group A,B,C and D cattle were 0.79㎏ and 5.68㎏, 1.02㎏ and 7.41㎏, 1.50㎏ and 11.37㎏, 1.61㎏ and 12.01㎏, respectively. 3. Climatic condition during the experiment was as follows: A maximum temperature ranging 31℃ to 37℃ were recorded at Yongin and Seosan for 12 and 17 days respectively. A minimum temperature ranging -8℃ to -15℃ were recorded at Yongin and Seosan for 16 and 9 days respectively. Snow fall in Yongin was recorded as 6 days while Seosan was 9 days, and a maximum fall was 90.0㎜ in Yongin and 30.0㎜ in Seosan. 4. Slaughter record of 2 castrated Korean cattle showed relatively higher dressing and other values. These were 58.6% and 56.27% of dressing percentage, 0.9cm and 0.8cm of covering fat thickness, 62.3㎠ and 68.5㎠ of Loin eye area size, 2^+ and 3^+ of marbling degree for No.1. and No.3. cattle respectively. 5. Blood pictures of the experimental cattle during the experimental period were as follows: number of red blood cell was 5.10 to 9.34 10^6/c.mm, Parked cell volume was 26.0% to 35.0%, hemoglobin value was 7.22gm to 11.30 gm/100㎖. total serum protein was 5.20 to 8.45gm/100㎖. 6. Economical analysis. Feed cost for per ㎏ body gain of Group A, B, C and D were 204.4won, 206.7won, 234.6won, and 297.1won, respectively. Incomes subtracted only feed cost per head of Group A,B,C,D were 83,695won, 39,090won, 18,958won and 16,414won, respectively. In case of group A cattle, a net income per head was 69,652won. In this case, the income was calculated by the subtraction of fees of facilities, labor, sanitation, interest and depreciation cost from meat price.