Based on the grinding movement relationship of rake and flank face of ball-nose end mill, make use of SolidWorks software for development platform, and took advantage of Visual Basic 6.0 to develop the grinding simulation system and parameters analysis system of ball-nose end mill. Grinded the simulation of the rake face of ball-nose end mill and obtained ideal cutting edge curves. Effect of grinding wheel diameter change on cutting edge curves of ball-nose end mill was investigated and the effect has rarely influences, so as to guide the actual production of ball-nose end mill.