This paper uses the perspective of “state-led neoliberal modernization” to explore the collusion of the state and the market in the construction of scientific motherhood and its effect on rural nannies in China. It claims that the state and the market work together to shape rural nannies’ modern subjectivity in the neoliberal economy through the commercial training programme of scientific motherhood. Based on a case study in Shanghai, this paper argues that the training for scientific motherhood attempts to transform rural women into modern care workers through two mechanisms: reconstructing recognition and mobilizing emotion. Rather than passively receiving the training, nannies use their agency to adjust the knowledge and practice of scientific motherhood to suit their complicated working situation. Their strategies include deploying scientific knowledge flexibly and instrumentally, practising self-restraint in limited intimacy, and paying attention to their own familial investment.