Method and electronic equipment for forming, updating and recovering mapping table

The invention discloses a method and a kind of electronic equipment for forming, updating and recovering a mapping table, wherein the mapping table comprises a first-level mapping table and a second-level mapping table, and the formation method comprises that all the logic pages from a host are mapped into physical pages of an NAND on a solid-state storage through page-level mapping to form the second-level mapping table; and a first physical address is acquired, the first physical address is a physical storage address of a first block in the second-level mapping table, the first physical address and corresponding first identification information form a mapping relation in a mapping unit of the first-level mapping table, and the first identification information is identification information of the first block.