Some provisions need to be clarified in China’s legal regulations of the principle of joint punishment for plural crimes committed by one person. “Not less than” and “not more than” in the Article 69 should not include the given figure, however, how to negotiate the Article 69 with the Article 99 in criminal law needs to be further studied. Different kinds of fixed-term imprisonment should be fulfilled one by one in combined punishment. The merger of several same supplementary punishments should apply absorbable principle, the principle of restrictive aggravation, and concurrent principle according to the traits of all kinds of supplementary punishments.