This study explores the doctoral cultivation system and mechanism of university think tank in China. A policy narrative analysis of doctoral cultivation mechanism aims to unpack how to cultivate university think tank talents. It is suggested that we need to promote the construction of interdisciplinary disciplines and clarify the attribution of disciplines for personnel training; build an interdisciplinary interaction mechanism and form a collaborative training system and give priority to the construction of policy disciplines as basic disciplines for personnel training. Along with the policy suggestions above, the cultivation pathways of cultivating doctoral students in university think tanks is provided systematically in the last section.