Objective To investigate knowledge,attitude and behavior on medication use safety among pregnant women,provide the basis for publicity and education on medication use safety during pregnancy and improve rational medication usage.Methods A total of 360 pregnant women who came to Dalian Municipal Women and Children's Medical Center(Group)for routine pregnancy check-up from July to September 2019 were included in the face-to-face questionnaire about knowledge,attitude and behavior on medication-use safety during pregnancy.Results The proportion of medicationuse during pregnancy was 99.17%.Respondents were cautious about medication use during pregnancy and had good knowledge of medication-use safety.However specific medication-use safety knowledge and medication compliance was poor,channels to acquire mediation-use safety knowledge were diversified.Consulting doctors or pharmacists accounted for 69.72%and accessing information from internet accounted for 64.44%.The proportion of independent medication purchase during pregnancy was high,up to 36.94%.Conclusion It's necessary to carry out various forms of medication-safety education to enhance and promote the level of rational use among pregnant women.