The increasing demand of mobile network communication bandwidth requires more information in the limited bandwidth. In this paper, a novel bidirectional transmission system architecture based on Radio over Fiber Passive Optical Network (RoF-PON )system and Power over Fiber (PWoF) system is proposed, and the transmission performance of the hybrid system is investigated in simulation. In RoF-based mobile networks, the use of PWoF realizes the centralize power in Central Office(CO), providing a more cost effective installation method for communication networks, as well as ease of operation and maintenance. The simulation results of the system verify the reliability and feasibility of the system, which proves that the hybrid transmission system of PWoF and RoF-PON can realize the bidirectional transmission of energy and wireless signals.