In the paper, the comentropy theory is extended and applied to analyze the structural characteristics and law in the process of evolution of hydrologic cycle.

• 该文拓展了水文循环演化过程中摘理念，并在水文结构特征和规律分析中应用，发现判别其突变或灾变的阈值指标，为预测水文循环演化趋势提供了新思维。