System and method for testing thermal resistance of life jacket in water

The invention relates to a system and a method for testing thermal resistance of a life jacket in water. The system comprises a thermal dummy used for supplying heat to the life jacket; the simulated water environment test box is used for providing a real sea area environment for the thermal manikin; the water flow internal circulation water pump is used for simulating the actual seawater circulation flow state; the heat flux density and temperature measuring system is used for detecting the heat flux transferred outwards from the skin surface of the thermal dummy and measuring the temperature inside and outside the life jacket; the data acquisition system is used for acquiring the heat flow and the temperature inside and outside the life jacket; the LabVIEW data detection and analysis system is used for outputting the thermal resistance value of the life jacket according to the received heat flow and the temperature inside and outside the life jacket; and the temperature sensor is used for monitoring and set