美国是英美法系(commen law system),中国是大陆法系(civil law system)。 大陆法系是没有陪审团的。大陆法系中使用成文法(written law),而英美法系使用惯例法(conventional law sorry this word I am not so sure)。中国没有陪审团,所以没有陪审团义务(jury duty)
The PRC legal system is based on the PRC Constitution and is made up of written laws, regulations, directives and local laws, laws of Special Administrative Regions and laws resulting from international treaties entered into by the PRC government. Court case verdicts do not constitute binding precedents. However, they are used for the purposes of judicial reference and guidance.
The National People's Congress of the PRC (''NPC'') and the Standing Committee of the NPC are empowered by the PRC Constitution to exercise the legislative power of the State. The NPC has the power to amend the PRC Constitution and enact and amend basic laws governing State agencies and civil and criminal matters. The Standing Committee of the NPC is empowered to enact and amend all laws except for the laws that are required to be enacted and amended by the NPC.
I hope this can help you