Data processing method of storage device, storage device and storage medium

The invention discloses a storage device. The storage device comprises a main control unit; the plurality of storage blocks are connected with the main control unit, the plurality of storage blocks comprise storage blocks of a four-level unit type, and each storage block of the four-level unit type comprises a data storage area and a data cache area; wherein the main control unit is used for performing a first programming operation on the nth target storage page to the (n + 3) th target storage page in the data storage area, and storing target data corresponding to the first programming operation into the data cache area; after programming operation is carried out on the m remaining storage pages, second programming operation is carried out on the nth target storage page to the (n + 3) th target storage page through the target data in the data cache region, and n and m are non-zero natural numbers. The data writing efficiency can be improved. 本申请公开了一种存储装置，该存储装置包括：主控单元；多个存储块，与主控单元连接，多个存储块中包括四层级单元类型的存储块，每一四层级单元