There are some common points between the system concerning legal compulsory portion forced share in China and the system of special share practiced abroad,as well as some differences between the two.The relatively rough contents of the system of legal compulsory portion forced share in China lead to the shortcomings such as the narrowing scale of applicable subjects,lack of operability in applicable standard,unclear division of inheritance share and so on and result in inefficiency in the limitation and restriction of the freedom of testament.The system of special share should be referred and introduced to further improve the inheritance law in China.