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Using theoretical analysis and numerical calculation method,the axial adiabatic compression of a spinning non-ideal gas in a cylinder with a smooth surface is investigated.We show that the axial pressure of a spinning gas will gradually become lower than that of a stationary gas during continuous compression,even though the initial axial pressure of the spinning gas is larger than that of the stationary gas at the same initial temperature and average density.This phenomenon indicates that the axial compressibility of gas is improved in a rotating system.In addition,the effect of different forms of virial coefficient B(T) on pressure and temperature changes in spinning and stationary gases are investigated.Research on the axial compressibility of spinning non-ideal gas can provide useful references for fields that require high compression of gases,such as laser fusion,laboratory astrophysics,and Z-pinch experiments.