The isostatic pressing ceramics have the characteristic of high hardness. Coolant can not be used at the time of processing. It is easy to cause the cutting tool to wear quickly. This is a typical hard processing material. In the actual manufacture, the mismatch size and parts broken and so on are easy to appear. Taking isostatic pressing ceramics possessing complex shape as an example, the reasonable cutting parameters, cutting parameters and the technological route are determined. The results gained show that this method can ensure precision of complex shape of ceramics formed by isostatic pressing and effectively improve the qualified rate and utilization rate. Meanwhile, this method also solves the processing difficulty produced on ceramics with small diameter and deep hole and ring groove.