Aiming at bring into effect excruciation to defendant, bourgeois are incessant development and perfect, establish no additional punishment resulting from retrial procedure.

针对封建主对重审施以酷刑，任意加重刑罚的现象，资阶级在禁止利益变更原则的基断的发展和完善，在再审程序中确立了再审加刑原则。