Changes in quality of perinatal health care before and after implement of regulation of voluntary premarital medical examination;

The implementation of early perinatal health care according to the related factors of premature and its significance

The impact of perinatal health care on allotriotexis of pregnat and parturient women

OBJECTIVE Study the needs and sstatus quo of prenatal health care and explore an advanced service model and effective method.

Objective: To analyze the causes of perinatal deaths, to improve the quality of perinatal healthcare and reduce perinatal mortality.

Objective:To analyze relationship between outcome of perinatal infant of eclampsia and perinatal health examination.

Measurement of the living standards of family in rural area and relationship between wealth index and perinatal care status;

Objectives: to explore the risk factors of the death of fetus in one district of Changsha, to supply clue and basis for the prevention and control of the death and to evaluate the effect of perinatal care in the research of the intervention to the death of fetus.