In our research, we let 30 cases with parturient hypertension syndrome (PHS) as the experimental group and 30 other cases of normal pregnancy as the control group. The Cu, Zn and Cd of each sample collected from maternal serum, umbilical serum and placenta were surveyed by means of the atomic absorption spectrophotometer. The results chowed as follows: 1.The maternal serum Zn level of the experimental group was lower than that of the control group (P0.05) in the Zn, Cu level and Cu/Zn ratio of the umbilical serum and placenta between the experimental and control group. 4. There was no coordination in the Zn, Cu lenel and Cu/Zn ratio (r0.05) between 2 groups, but the Zn level and Cu/Zn ratio of the placenta and umbilical serum showed coordination between the 2 groups (Zn: r=0.44, p