Objective To investigate the sedative effect of Dexmedetomidine in cesarean section and affect the newborn's Apgar score. Methods 240 cases of pregnant women with caesarean section under combined spinal-epidural anesthesia in the People's Hospital of Yunfu City were selected, they were randomly divided into four groups, with 60 cases in each group, three Dexmedetomidine groups(group A, B, C); saline control group(group D), before anesthesia groups A, B, C were given the 0.6, 0.8, 1 μg/kg Dexmedetomidine mic...