Database is built according to the collection of the data from criminal cases which were reported on Legal Daily from 1996 to 2014. The analyses of those 974 samples show that from 1996 the number of the vests appears in the courts increases and that the identity, the crime committed as well as the education background of the defendant influence whether he wears a vest in the court. It can be seen that the judicial system does not follow the requirements of procedural justice, does not treat the suspects with dignity and does not treat the suspects equally. The vest in the court will be terminated after the new measure which is called Supreme People’s Court 4th 5 Year Court Reform Plan. However, it takes time to drive out the bias behind the vest.