The invention provides a program run method for an embedded system. The program run method includes the steps that a page address is used for converting cache, and the cache and the granularity of address conversion information in an NAND Flash are unified; a global address page conversion table is used for positioning address conversion pages in the NAND Flash, and practical address conversion information is obtained from the address conversion pages; data belonging to the same address conversion page are written into identical data blocks in a concentrated mode based on data of the conversion pages. According to the program run method for the embedded system, spatial locality is used for improving the cache hit rate, cache access is optimized, the updating number of the conversion pages is reduced in the recycling process, and the system performance is promoted.