The invention provides a vacuum plume pneumatic thermal full field measurement system based on pressure sensitive/temperature sensitive paint. The system includes a vacuum chamber, a pneumatic model,an engine, a pressure sensitive/temperature sensitive paint layer, an excitation light assembly, an emission light channel and an image acquisition and analysis module, wherein the pneumatic model andthe engine are placed in the vacuum chamber, the pressure sensitive/temperature sensitive paint layer is attached to a to-be-detected surface of the pneumatic model, the emission light channel includes an observation window, a beam splitter and a band pass filter sequentially arranged in the emission light observation direction, the image acquisition and analysis module is connected with the emission light channel, when measurement is performed, the light emitted by the pressure sensitive/temperature sensitive paint layer is received by the emission light channel, the light after filtering and beam splitting processing is transmitted to the image acquisition and analysis module, and pressure distribution and temperature distribution of the pneumatic model surface are obtained by a computer according to difference of illuminating states of the pneumatic model pressure sensitive/temperature sensitive paint layer before and after working of the engine. The system is capable of measuringthe pneumatic force and pneumatic heat of a vacuum plume in a non-contact manner.