Memory management method and device of embedded system

The invention provides a memory management method and device of an embedded system. The method comprises the steps that a page is used as a minimum application unit, and a memory page application request aiming at a user management memory area is received; according to the memory page application request, memory pages with preset sizes are distributed; after the distributed memory pages are formatted, each memory page is divided into memory chips with a same size; an SLAB management structure is established at the starting position of each memory page, and a memory chip management table is established after the SLAB management structure is established; or a memory block is applied in a preset cache in the user management memory area and used for establishing the SLAB management structure,and a memory chip management table is established after the SLAB management structure is established; the SLAB management structure is further used for distributing the memory chips to an applicationprogram according to the m