This paper has simulated the Free-Jioned chains ( FJ) and the Free-Joined chains with Hard Core Potential ( FJ-HC) of ring-shaped and linear polymer coils by the random flight of tridimensional offlattice. 通过三维非晶格无规行走,对线型和环型自由连接链(FJ)及具有硬核势能的自由连接链(FJ-HC)进行了模拟。