The invention relates to a method of constructing a lifetime optimization tree based on a dynamic data pattern. The method includes the steps of quantifying energy consumption using a TPO scheduling mechanism; calculating an energy consumption model for a node v for receiving, sending, and idle listening during a sampling period; and constructing a lifetime optimal routing tree using the energy consumption model. In the technical scheme, a mathematical model is designed for the tree structure to accurately describe the energy consumption of sensor nodes and the designed mathematical model is used to construct an efficient tree structure to optimize the lifetime of the network.