A method for easily detecting a memory error that may occur when a memory is accessed or an allocated memory is freed in the process of developing software is disclosed. The memory error detecting method includes: (a) generating an original block indication variable for indicating a starting memory block of a memory region allocated with respect to a variable included in a computer program; (b) detecting a memory error that may occur when the allocated memory region is accessed, by performing a certain operation (computing or arithmetic operation), before the allocated memory region is accessed, using a target block indication variable indicating memory block to be accessed in the allocated memory region and/or the original block indication variable; and (c) outputting information about a detected memory error.