The multi-core processor is widely used in embedded systems because of its potential advantage in power consumption and data processing capability. The debugging difficulty of parallel programming will directly affect the release time of products. The complexity of the debugging will rise in index rate with the increase of cores. To resolve the common abnormal issues in multi-core platform, this thesis introduces a type of debugging method of the multi-core embedded system to trace simple executive programs by means of analyzing of the working mechanism of MIPS architecture, which makes the debugging of multi-core platform more convenient.