Moisture cycling strongly affects the development of regional and global weather and climate systems. Bulk models derived from the water vapor balance equation are widely used to study water vapor cycling. The existing bulk modes of moisture cycling were systematically determined, and based on the calculation framework of the model, existing models were divided into Euler and Lagrange types time. The basic assumptions, mathematical derivation process, and characteristics of the representative models in the different developmental stages of the two types of models are summarized. Subsequently, the development trend of the bulk model for moisture cycling, the advantages and disadvantages of frequently used models, and the scope of application are discussed. Finally, the problem of assuming well-mixed moisture and a one-layer atmosphere in the current models as well as the future development of bulk models for moisture cycling are discussed.