Grinding fixture and grinding machine for diamond compact

The utility model belongs to the field of devices for grinding or polishing, and particularly relates to a grinding clamp for a diamond compact and a grinding machine. In order to solve the technical problem that a thin workpiece to be machined cannot be firmly clamped by an electromagnet base body of a surface grinding machine due to the fact that the magnetic conductivity of the workpiece to be machined is very weak, the grinding clamp for the diamond compact comprises a clamp base body, and a containing groove is formed in the clamp base body. The containing groove is provided with a first containing part used for containing a to-be-machined workpiece and a second containing part used for containing a fluid medium, the second containing part communicates with the first containing part, and the second containing part is located on the periphery of the first containing part. And the fluid medium in the second accommodating part forms a fixing body which surrounds the outer part of the to-be-processed workpie