Abstract: Objective To investigate the knowledge，attitude，and exercise self-efficacy of pregnant women. Methods A total of 196 pregnant women were recruited in a hospital from January to February 2019 by convenience sam-pling. They were investigated with General Information Questionnaire，the Pregnancy Exercise Knowledge Scale，the Pregnancy Exercise Attitude Scale，the Pregnancy Exercise Self-Efficacy Scale. Results 98.5% pregnant women be-lieved exercise during pregnancy was necessary. The average score of their knowledge about exercise was （14.63±4.72）. The score of exercise self-efficacy of pregnant women was （37.25±5.11）. Only 27.6% pregnant women re-ceived regular training on exercise-related knowledge，91.3% believed the training was necessary，and 70.4% hoped they could learn through professional lectures. Conclusion Most pregnant women believe exercise during pregnancy is very necessary. Most of them are short of related knowledge and regular training. Hospitals can increase training and guidance on exercise during pregnancy and provide individualized service according to their needs.

Key words: Pregnant Women, Physical Activity, Health Knowledge, Attitudes, Self-Efficacy