An effective design and implementation method of NAND flash memory host controller that implemented in Solid State Disk controller was analyzed in this paper. The NAND flash memory host controller supports up to 4 channels NAND flash ports, with 4 channels NAND flash port sharing one ECC error correction module. By using a new type of programmable control method, the CPU can realize 4 channels read and write flash memory data concurrent, and is compatible with a variety of brands of NAND flash. The design philosophy of hardware architecture and critical modules was introduced in this paper. The verification and synthesis results were demonstrated finally. Considering of performance and cost evaluation, general SSD controllers could be satisfied by this controller which configured with 4 flash channels and multiple ECC coding formats.