Two-phase flow theory was used to establish an one-dimensional and steady state mathematical model of bubble pump pressure drop. Three kinds of homogeneous flow pressure drop models and 15 kinds of split phase flow pressure drop models(three kinds of split phase flow friction pressure drop models with 5 kinds of cross section gas rate models) were selected to simulate,then the experimental data of the bubble pump with saturated water as working fluid were analyzed and compared with the theoretical value. The result showed that simulation accuracy of the Friedel friction pressure drop model combining Zuber section gas rate model is the highest. However,when we use this model to simulate the flow characteristics of the liquid lift of the bubble pump with the change of the heating power,we found that the theoretical value and the experimental value agree well only within a certain range of heating power. Therefore,sectional optimization on bubble pump model was put forward. We found that the simulation accuracy of M-S split phase flow model combined with Tom variable density section gas rate model is the highest under the working condition of low heating power. The Dukler homogeneous flow model of the friction pressure drop is the best model under the higher heating power working condition. Therefore,the method of optimizing the theoretical model of bubble pump by subsection has high credibility.%利用两相流理论建立了一维、稳态的气泡泵压降数学模型。对3种均相流压降模型和15种分相流压降模型（3种分相流摩阻压降模型与5种截面含气率模型结合）进行了模拟计算，然后结合以饱和水为工质的气泡泵的实验数据，对理论值与实验值进行对比分析。结果表明：Friedel摩阻压降模型结合Zuber截面含气率模型的分相流压降模型的模拟精度最高，适用性最好。在选用该模型模拟气泡泵液体提升量随加热功率变化的流动特性时，发现理论值与实验值在一定加热功率范围内吻合很好，然而超过此范围，实验值与理论值的之差越来越大。因此提出了对气泡泵理论模型进行分段优化，结果表明：在低加热功率工况下模拟精度最高的是 M-S 分相流模型结合Tom变密度截面含气率模型，在高加热功率工况下模拟精度最高的是Dukler均相流摩阻压降模型。因此分段优化气泡泵理论模型的方法具有较高的可信性。
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