Data migration method, flash memory device controller and flash memory device

The invention relates to the technical field of solid state disk application, and discloses a data migration method, a flash memory device controller and a flash memory device.The data migration method comprises the steps that the number of data reading times of a super block and the number of data reading times of a physical block in the super block are obtained, the data reading times of the super block is the maximum value of the data reading times of all physical blocks in the super block; if the current data reading frequency of the physical block is greater than the data reading frequency of the super block corresponding to the physical block, updating the current data reading frequency of the super block to the current data reading frequency of the physical block; if the current data reading frequency of the super block is larger than or equal to the physical block reading frequency threshold value, data moving is conducted on the super block, and the access mode of the super block is determined by obt