To solve the deficiency of present press driven by linear motor, a novel NC press with togglelever force amplifier driven by linear motor was creatively designed, and a concise mechanical formula for calculation and the performances analysis were given after describing its working principle. Distinguishing features of this press, those were, undermounted power system, symmetrical structure design and application of linear servo motor, made it have not only big force to output but also lower gravity center, which ensured that this press had better mechanical performance, smaller volume and the effect of almost mute punching, so that the force situations of the worktable and the base were also improved.