中文摘要：

研究了合成群列的个数较小的有限群的结构．特别给出了合成群列的个数为4或5的有限可解群的完全分类．

英文摘要：

Finite groups with a small number of composition series are studied, and the complete classifications of finite solvable groups with 4 or 5 composition series are presented.