Many kinds of recently developed materials are very hard and brittle and it is very difficult and expensive to process these materials. So it is necessary to develop an easier and more economical method to process these materials. As an example, punching holes in sheet glass was studied in this paper. Because punching holes in sheet glass by ordinary methods is impossible, this paper presents a method for punching holes in sheet glass under statical high pressure. This research confirmed that it is possible to punch holes in sheet glass, and clarified the conditions needed to obtain good holes without defects.