Embodiments of the present invention disclose a multi-core online patching method and apparatus for mapping patch data to a patch area of a shared memory. Method of the embodiment of the present invention includes: separating shared global variables and private global variables defined in a patch; mapping the shared global variables to a shared data segment in a patch area by using a mapping mode of a direct memory address, and mapping the private global variables to private data segments in the patch area by using a mapping mode of a variable address specified by a user. The embodiments of the present invention may be used in a multi-core DSP system of telecom-grade software.
