In this study a vibratory multi-blade cutting method based on the conventional method was developed. Hard and brittle materials such as ceramics and rock crystal can be sliced to produce units of same shape in quantity by this method. Machining characteristics and accuracy of this method were studied, and the following results have become clear. (1) Not only the vibratory method can produce high machining efficiency as compared with the conventional method, but also it can produce machining efficiency which is approximately constant when the stroke length is larger than thewidth of the workpiece. (2) In this experiment, the increase in machining efficiency using the vibratory method is proportional to the second powerof the amplitude and to the 1.2th-1.4th power the combined mean velocity. (3) The width and depth of the cutting gaps are maintained within ±10μm in the same manner as in the conventional method, if working pressure is less than about 0.3MPa. (4) The amount of material removed is proportional to the wear amount of the blades in both the conventional and vibratory methods. (5) No chipping and cracking were observed on the edge of the machined surface in the vibratory method.