I want to check the wall thickness of the irregular Body ,i am using solid edge ST7
Have you looked at using either "Live Section" or "Section" tools.....if you have not used either of these, type one into the "Command Finder" [at lower right side of the graphics window], and follow that up by looking at the help file topics.
Sean CresswellDesign Manager Streetscape LtdSolid Edge ST10 [MP8] Classic [x3 seats]Windows 10 - Quadro P2000Testing: Solid Edge 2019
There is no other way "only" what was suggested by @SeanCresswell (SE CAD jockey )
Hmm, or you can you Minimal distance from Measure group...