Because of the important role of multiphase flow in many fields and its complexity, the study of boiling heat transfer of two-phase flow has become an important topic of current research. Under the background of double carbon, energy saving and emission reduction are a hot direction in the current refrigeration industry. Therefore, studying the boiling heat transfer of two-phase flow is helpful to strengthen heat transfer and design more efficient heat exchangers. In this paper, the research progress of subcooled flow boiling based on CFD is reviewed. Firstly, the mechanism of subcooled flow boiling and the current research contents are introduced. Secondly, the development of incompressible flow and two-phase flow solving algorithms is reviewed, and the advantages and disadvantages of each algorithm are analysed and compared. Finally, a research method is selected to provide a basis for the simulation of subcooled flow boiling in the tube.