Mobile devices have achieved great progress. They allow user to store more audio, video, text and image data. These devices are also equipped with low radio range technology, like Bluetooth and Wi-Fi, etc. By means of the low radio range technology, they can communicate with each other without using communication infrastructure (e.g. Internet network) and form a mobile ad hoc network (MANET). The peers in the MANET are typically powered by batteries which have limited energy reservoir also they are free to move from their locations at anytime. Recently, P2P file sharing systems are deployed over MANET. A challenging problem in these systems is (i) the selection of best peers that share pertinent resources for user's queries and (ii) guarantee that the pertinent peers can be reached in such dynamic and energy-limited environment. To tackle this problem, we propose a context-aware integrated routing method for P2P file sharing systems over MANET. Our method selects the best peers based on the query content and the user's profile. Furthermore, it considers the energy efficiency, peer mobility and peer load factors into the query forwarding process to guarantee that the pertinent peers can be reached.