Abstract: Objective To study the level of knowledge on dental care during pregnant and puerperal period among gravidas in Yancheng. Methods We performed a survey covering 16 questions concerning dental care knowledge among 1206 gravidas. A routine dental inspection was conducted for all surveyed subjects. Statistical analysis was done with factors as ages and gestational weeks and with data acquired from the survey. Results Local gravidas were generally in lack of dental care knowledge, given that 91.34% of gravidas had not received any dental care education; dental health levels were low given that 56.30% of them suffered from saprodontia and 75.04% from gingivitis; 73.63% of them had soft deposits and 51.33% had dental calculus. However, the proportions of gravidas with saprodontia and gingivitis seeking for medical care were only 1.37% and 5.66%. Conclusions Dental health education and practice improvement are suggested for local gravidas.