The value of OD of lymphocyte transformation test (LTT and BTT ) was measured during different period of pregnancy and days after parturition in 12 rabbits. The result indicated that from hybridization to the 20th day in pregnance, OD value of T-Lymphocyte transformation(ODT) was lower than control groups(p<0.05), while OD value of B-Lymphocyte transformation(ODB)submitted an increasing trend all long, which showed that the cell immune fuction was in a lower state in these period. ODT was increased on the 5th day before parturition and was tiptop in intraday parturition, which was higher than 10th before parturition (p<0.05), while ODB decreased, which suggested that the starting of parturition seems to be related to the increased cellular immune function. ODT was decreased suddenly on the 1st day after parturition, then these index returned, while ODB increased suddenly and then increased again. Then all returned normal standard, which indicated that the immune fuction of rabbits returned normal standard after parturition.