Wireless Sensor Networks (WSNs) are resource-constrained networks that have been applied in several military and civilian applications. Many protocols have been proposed for the simple, low power, low cost WSNs. In this paper we propose a new routing protocol based on Tree Routing (TR). The proposed protocol exploits neighbors’ links in addition to parent-child links to transmit messages while considering the residual energy at each node. Nodes should maintain neighbors' information in their neighbors table. The goal is to try to route the data over the shortest path and at the same time to prolong the network’s lifetime by considering network power consumption and avoiding excessive messages between nodes. The proposed protocol is analyzed and compared with other tree-based routing protocols such as plus tree protocol