The invention discloses a super-long exit pupil distance multi-star simulator for thermal vacuum testing, which comprises a diaphragm, an optical collimation module, and a star point plate arranged coaxially along the incident direction of light, and is the star point The board provides a light source for illumination, and a control system for controlling the light source; wherein, the optical alignment module includes lens one, lens two, lens three, lens four, lens five, lens six, lens seven, lens eight, lens nine, and Lens ten. The invention is placed outside the thermal vacuum tank, and can perform attitude calibration on the star sensor in the thermal vacuum test.