The CNC laser cutting equipment is integrated of laser, machine tool and CNC. The complete machine has the advantages of high performance, little floor space, convenience to transport and low cost. Based on the research of such machine tool, by using the character-no cutting force an optimum design and theoretical analysis on the machine tool s driving, precision and general planning are given. The key teclmology, runup of the machine tool, portabilities of the focus system and diversification of the Z-float are studied.