This experiment was conducted to investigate the morphological development of reticulum of Korean native young goats, which were purchased at a Chinju animal market and farms. The number of Korean native young goats slaughtered and examined was 4, 4, 4, 4, 3. 3, 3, 3, 3 and 3 at 2. 6. 15. 21. 30, 40, 60, 90. 120 and 150 days of age, respectively. Three items (body weight, chest girth and body length) in the external body form and 9 items (R.L., right and left reticulum length; U.L.. upper and lower reticulum length: reticulum weight; reticulum area; U.P.C.R., upper and lower length of one polygon located at central part of reticulum; R.P.C.R., right and left length of one polygon located at central part of reticulum; T.P.C.R.. thickness of polygon wall located at centeral part of reticulum; T.P.M.R., thickness of polygon wall located at middle part of reticulum; and T.P.E.R., thickness of polygon wall located at edge part of reticulum) in the reticulum morphology were investigated for the each group. The results were summarized as follows ; In general, all values of the items investigated tended to be elevated by age, however, these values were as much as about 53-78% of those from matured Korean native goats. Number of correlation coefficients obtained among 12 items were 66. and correlation coefficients among 61 items were significant(P$lt;0.05). Correlation coefficients and regression equation between reticulum weight vs. reticulum area (r₁), and reticulum weight vs. U.P.C.R. (r₂) were r₁=0.9252** and Y=11.963＋2.393X, and r₂=0.8997** and Y=2.803+0.168X, respectively. Correlation coefficients and regression equation between reticulum area vs. U.P.C.R. (r₁), and reticulum area vs. R.P.C.R. (r₂) were r₁=0.9287** and Y=2.1221-0.067X, and r₂=0.9007** and Y=3.382+0.094X, respectively.