The utility model provides a celestial body operation simulation device, it includes barrel, elasticity film, air -blower to and two at least spheroids, elasticity film closing cap is in barrel's lastsquare -mouth is along last, the spheroid is placed on the elasticity film for imitate celestial body or dark matter, it has the gas pocket to gather on the elasticity film, the air -blower pass through the air inlet pipeline with barrel's inner space intercommunication for to blowing in the barrel and forming the malleation, the gas in the barrel certainly the gas pocket is discharged, is used for bearing spheroidal partial gravity. The utility model discloses simple structure can be used for simulating celestial body operation laws such as celestial body revolution, universal gravitation, dark matter, dark energy, cosmic expansion and gravitational wave, clearly demonstrates astronomical knowledge hard to understand for the student, popularizes astronomical knowledge well, and the ordinary masses of being convenient for understand.