After the reform and opening up, the feminization of teachers in China has become a reality and is becoming more and more intense. Based on the embeddedness theory, it is found that women’s career choices are restricted by the resurgence of traditional gender role norms, the family policy of “re-familialization” and the underdeveloped labor market system. To avoid employment risk, women try to seek institutional protection and choose to be a teacher, making use of their gender advantage in securing a teacher’s job, and strive to maximize employment within the system. This rational choice has greatly influenced women’s willingness to be a teacher through social network, and further strengthened the feminization of teachers. The further feminization of teachers entails the crisis of the invisible weakening of female teachers’ post-service development and teachers’ social status. To address this situation, equity should be taken as the primary principle. It is necessary to build a teacher-friendly society and increase the reserve of male teachers. It is also necessary to build a women employment-friendly society and expand women’s career choices besides becoming a teacher. We should also pay attention to the career planning education of senior high school students to ensure that those who love teaching become teachers.