The ceramic circuit board is a new type of circuit board with ceramic as the substrate and externally attached with many different circuit components. It is widely used in the manufacture of the electronics industry. It has many advantages such as good thermal conductivity, high pressure resistance, and stable chemical properties. Become an important part of the manufacturing and production of electronic products. With the increasing number of ceramic circuit boards, how to identify a good quality ceramic circuit board from many manufacturers and brands requires certain skills.