This article uses the theory of "mind and body" which is called "Embodied Cognition" to study the regulation effect of reading on emotion. In this paper, the concept that reading and emotion regulation are compatible with each other from the perspective of "Embodied Cognition". The principle of " Embodied cognition" on reading’s emotion regulation is brought forward, which includes the formation of emotion, the feelings of emotion, the dynamic unification of emotion, body and environment. Then, an interaction model related to the body,emotion and environment in reading time,and a unified model of dynamic reading,body and emotion in the state of activated mirror neurons are constructed. According to the cognitive mechanism of "body and mind integration", the methods of reading’s regulation on emotion and the new ideas of library’s reading promotion are also put forward.