Abstract: Aiming at heterogeneous sensor network, N: X-based data aggregation routing algorithm was proposed, data transferred is aggregated by N: X (X=1, 2, 3) to prolong the network life. The algorithm reduces the size of data transferred to protect the nodes near the destination node. The simulation results show that the data transmission algorithm based on data aggregation in the heterogeneous network can prolong the network lifetime better, improve the performance of network.