The thesis recounts the realization of the boundary tag method and the buddy system allocator method , which had been improved . a dynamic memory management method using multilevel bitmap catalogue structure is introduced in the paper . a detailed description of the structure of multilevel bitmap catalogue as well as algorithms using multilevel bitmap catalogue is given 详细阐述了对边界标识法，伙伴系统算法改进后的具体实现；介绍了一个用多级位示图目录来实现存储资源动态分配的算法，给出了多级位示图目录的结构和相应的算法，并详细介绍了一个二级位示图目录的具体实现过程。
