【Objective】 Explore the knowledge of maternal and child health of pregnant, so as to provide evidence for improving content and form of health education and promotion. 【Method】 Making use of a questionnaire survey method,pregnant women collected as the research object who did pregnancy test and delivery in Women and Children Hospital, Chaoyang district from February to March, 2011. 【Results】 The survey pass rate was 31.0%, the pass rate of pregnant and maternal health knowledge was 57.7%, and the pass rate of newborn health knowledge was 16.6%. The pass rate of maternal was previously higher than the women's in early pregnancy. The correct rate of some health problems such as maternal specific physiological indicators of different age or infant specific knowledge of physical phenomena was lower. 【Conclusion】 According to the needs of different stages of pregnancy, through the appropriate channels and tools, we should carry out health knowledge promotion timely and effectively, so as to improve maternal and child health knowledge level of pregnant women and maternal.