The invention discloses a miniature steam generator thermal hydraulic analysis testing system, and belongs to the technical field of nuclear power station steam generator equipment. The miniature steam generator thermal hydraulic analysis testing system comprises a first loop unit, a second loop unit, a steam generator and a data acquisition unit. The first loop unit and the second loop unit are connected with the steam generator through pipelines, and fluid in the first loop unit can be used for heating fluid in the second loop unit. The data acquisition unit is used for acquiring the temperature, pressure and flow of fluid of the first loop unit and the second loop unit and flowing into steam generator, the first loop unit heats cooling water by means of a heat regenerator and a heating water tank which replace a nuclear reactor being of a complex structure. With respect to the first loop unit and the second loop unit, heat regenerators are employed to lead in a regenerative cycle, energy is saved, and the energy utilization rate of the system is increased.