Abstract: This experiment was to explore type of Guangxi Bama miniature pig anemia and infer probable cause after the pigs infected by porcine circovirus-like agent P1.Twelve Guangxi Bama miniature pigs at 1 month of age were randomly designated to two groups of 6 each. Group ｜ pigs were each injected into the superficial inguinal lymph nodes with the cloned P1 plasmid DNA and pigs in group 2 served as controls. The peripheral blood erythrocyte parameters of the pigs were detected with the automatic hematology analytic instrument at 3,8,17,24,31 and 40 days postinoculation （dpi）.The statistic results showed that there were no significant difference among five parameters, including RBC,HGB,HCT,MCV and MCHC, and two parameters （MCH and RDW） were highly significant difference between two groups. MCH were significantly decreased at 17dpi （P〈0.01） and RDW increased significantly at 31 dpi （P〈0.01）.The pigs suffering from porcine circovirus-like agent P1 infection showed signs of microcytic hypochromic anemia.