Objective To understand the current situation and influencing factors of decision-making difficulties among surrogate decision-makers for critically ill puerpera．Methods A total of 262 critically ill puerpera and their surrogate decision-makers from the obstetrics and ICU of Xuchang Central Hospital from October 2022 to October 2023 were selected．A survey was conducted using the General Information Questionnaire,Maternal and Child Health Literacy Questionnaire,Decision Dilemma Scale,and Decision Participation Expectancy Scale．Results The total score of the Decision Dilemma Scale was（39.38±14.58）,with a total score of（13.91±7.16）for information provision and clear values,（20.41±8.25）for social support and decision effectiveness,and（5.06±1.96）for uncertainty．Multiple linear regression analysis found that gender,education level,decision time and total score of stroke prevention and control knowledge all have an impact on the decision-making difficulties of surrogate decision-makers in critically ill puerpera（P<0.05）．Conclusions There is a decision-making dilemma for the surrogate decision-makers of critically ill puerpera．Medical staff need to provide decision-making assistance based on the demographic characteristics,disease prevention and control knowledge,and patient disease characteristics of the surrogate decision-makers,in order to alleviate their decision-making difficulties and improve the quality of decision-making．