1. An error processing method for a rewritable non-volatile memory module comprising a plurality of memory cells, and the error processing method comprising: sending a first read command sequence, wherein the first read command sequence is configured to read a plurality of bits from the memory cells; performing a first decoding on the bits; if the bits have at least one error, correcting the at least one error, and determining whether each of the at least one corrected error belongs to a first type error or a second type error according to the step of the correcting the at least one error, wherein the first type error is different from the second type error, and if a value of channel reliability information is greater than a reliability threshold, the at least one corrected error is determined belonging to the first type error; if a first error in the at least one error belongs to the first type error, recording related information of the first error; and if the first error belongs to the second type error, not recording the related information of the first error.