Aiming at the characteristics and application performance of the routing directed diffusion algorithm in wireless sensor network, some flaws are pointed out. An improved routing algorithm is proposed based on sleeping mechanism to mend the flaws. The results of analysis and simulation demonstrate the effectiveness of prolonging network existence, reducing transfer amount and lower cost.%针对传感器网络路由协议定向扩散算法的特点和应用性能，分析了其存在的缺陷，从节省能量的角度研究了它的改进方案，提出了基于睡眠机制的扩散算法（DABSM），理论分析和实验仿真结果表明：改进后的算法有效减小了网络中的数据传输量，节省了能耗，从而进一步延长了网络的生存时间。
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