Profile is the most important base in double-action compressor design. Different cylinder profile decides different working chamber volume in double-action sliding vane compressor. Five equations of cylinder profile were researched by calculating the working chamber volumes and a new cylinder profile equation of double-action sliding vane compressor was composed to get larger chamber. In same condition with the other equations, the working chamber volume of new profile is bigger than the old profiles over 20 percent while it has no change in the moving and friction characters. And a three dimensional model based on SolidWorks of a new profile was done. Finally, it was assembled successfully in computer to check the design.