In the paper , the connectivity and diameters of sell - complementary 2 - multigraphs and sell - complementary digraphs are discussed , and if these graphs get disrupted the relations for the number ob edges and vertices between the two connected components are also studied in self - complementary permutation 摘要本文討論了2 -重自補圖和有向自補圖的連通性以及2 -重自補圖的直徑,同時以自補置換作為工具研究了當2 -重自補圖或有向自補圖被分成兩個連通分支后,這兩個連通分支之間的邊數與頂點數之間的關系。