The proposal and in-depth advancement of policies such as “affordable childcare” and “quality childcare” have quietly accelerated the development of the childcare service industry, putting forward higher requirements for professional and high-quality childcare talents. As an important base for cultivating professional childcare talents, preschool education majors in higher vocational colleges should, on the premise of deeply understanding the current market demand for childcare talents, systematically construct a pre-service training system integrating knowledge impartment, ability training and quality improvement based on the job competency model. It aims to open up paths for the growth and development of students majoring in preschool education and promote their magnificent transformation from the role of “students” to “professionals”. This paper first briefly expounds the importance and necessity of pre-service training for childcare teachers based on job competency. On this basis, relying on the job competency theory, it summarizes and proposes the construction path of the pre-service training system for childcare teachers, hoping to specifically break through the current predicament of pre-service training for childcare teachers and promote the high-quality and sustainable development of preschool education majors in higher vocational colleges.