A new study published in Medical Science Monitor analyzed the differences in vaginal microecological factors and genital tract infections among pregnant women of different ages. This study enrolled 751 pregnant women from January 2015 to April 2017, wherein vaginal microecological factors were evaluated. The findings revealed that there was no significant difference in bacterial density, flora diversity, vaginal cleanliness and lactobacillus number among pregnant women of different age groups. Among the 32.62% of pregnant women who had genital tract infections, the incidence of bacterial vaginosis, Candida albicans infection, non-albicans Candida infection, and Trichomonas vaginalis infection was 20.91%, 14.91%, 4.26%, and 1.73%, respectively. The combined incidence of bacterial vaginosis was 9.19%. It was noted that the incidence of non-albicans Candida infection in the optimum reproductive age group was higher than in the older age group. Whereas, the incidence of T. vaginalis infection in the younger age group was higher than in the optimum reproductive age group and higher than in the older age group. From the results, it was concluded that the microecological status of pregnant women was similar to that of normal women. The most frequent genital tract infection was bacterial vaginosis. Moreover, there was no significant difference in vaginal microecological observations among pregnant women in different age groups except that the non-albicans Candida infection incidence in the optimum reproductive age group and the T. vaginalis infection incidence in the younger age group were higher than in the other groups.