To investigate the changes in blood pictures of Korean native goat during gestation the erythrocytes, leukocytes, hemoglobin concentrations, hematocrit values and differential leukocyte counts ware measured and blood was collected from jugular vein, uterine artery and vein in maternal and umbilical artery and vein in fetus. The results were summarized as follows; 1. Erythrocytes and hemoglobin concentration were continuously increased during gestation and hematocrit values until 120 days of gestation were increased just before parturition in maternal. 2. In the fetus, erythrocytes, hemoglobin concentration and hematocrit value were continuously increased during gestation. 3. Total leukocytes was increased after 30 days of gestation according to progress of gestation, the percentage of neutrophil was increased and lymphocyte was decreased. 4. Total leukocytes in the fetuses was not shown difference of the value which the range is 3,300-4,700/㎣. The percentage of neutrophil was suddenly increased, but lymphocyte was decreased during gestation.