Abstract: In some key application，the delay or the drop of a packet is not permitted in the wireless sensor network，but because the congestion of the network，it will often occur.The paper analyzes the VPRED algorithm，which is based on priority method，reduces it computation complexity，and uses it on the node buffer manager.By using the VPRED，wireless node network can realize the key data transmit with low drop probability.

摘要： 在无线传感器网络中，存在拥塞的现象，而拥塞造成的延迟或报文丢弃在某些关键应用中是不允许发生的。从节点缓冲管理的角度，分析了基于优先级的VPRED缓冲管理算法，经过计算简化，应用到无线传感器节点的缓冲队列管理中，保证了关键数据较少丢包的传输。