Objectives: To investigate the mental status of pregnant women and to describe their obstetrical choices during the outbreak of COVID-19. Design: A cross-sectional study. Setting: Wuhan and Chongqing, two different epidemic areas. Population: A total of 1947 valid questionnaires were received. Methods: We collected information on demographic, pregnancy, and epidemic, along with their attitudes towards the epidemic, anxiety status and obstetrical choices. We described and compared the city-based distribution of all above factors, aiming to explain how anxiety and obstetrical choices existed and differed. Main Outcome Measures: To explore why differences existed, we estimated the impact of the epidemic on women’s anxiety by multivariable analysis. Results: Distribution differences could be seen between cities in employment status, household income, gestational age, fetal number, and exposure history. Women’s attitudes towards COVID-19 in Wuhan were more extreme than that in Chongqing. The anxiety rate was more than double in Wuhan (24.47%) compared to that in Chongqing (10.44%). Generally speaking, obstetrical choices were similar among the 1947 participants, but more obvious in Wuhan. Conclusions: Our study found that the outbreak aggravated prenatal anxiety, and the influence factors could be targets of mental care. Synchronously, vital obstetrical choices changed, followed by pertinent professional advice to prevent irreversible adverse pregnancy outcomes. Online platforms may play crucial roles to address patients’ needs in future PHEs. Funding: National Natural Science Foundation of China (No. 81771614 and No. 81771613), and the National Key Research and Development Program of China (No. 2016YFC1000407). Keywords: COVID-19; Pregnancy; Prenatal Anxiety; Obstetrical Choices.

Objectives: A change in the child policy could trigger a new baby boom with changes in birth-related characteristics. Besides, the adaption of the medical system to the policy needs demonstrating. Design: Retrospective study. Setting: Chongqing, China, in a comprehensive institution. Population: A total of 51,062 pregnant women with 52,589 neonates were included. Methods: All medical records involving delivery were obtained. The records of care-providers were from the HR department. Main Outcome Measures: The temporal patterns of deliveries, births and care-providers were displayed. The additional births and care-providers’ workload was calculated. The mothers’ constitution was described and the influence factors of obstetrical characteristics were identified. Results: The policy-leading upwards trends of deliveries and births were obvious. The percentage of mothers aged 35 and over increased (10.1% to 10.8% to 15.8%, p<0.001) and that of multipara also rose (17.8% to 25.9% to 37.6%, p<0.001). This new constitution of mothers was associated with additional births, and with a concurrent variation in CS rate (60.4% to 52.3% to 56.3%) but not sex ratio. The workload of care-providers decreased during this period. Conclusions: The baby boom and following pregnancy changes after the shifts of policies is obvious. The target women with hyper-age and multiparity contribute considerably to the additional births and to the policy’s general effects on various outcomes. Funding: National Natural Science Foundation of China (No. 81771614 and No. 81771613), and the National Key Research and Development Program of China (No. 2016YFC1000407). Keywords: China’s Family Planning Policy; birth; obstetrical characteristics; pregnancy complications.