Embedded software development and debugging tools based on Eclipse platform has important significance for embedded software development, but at present, the number of debugging tool based on Eclipse platform is few. In view of this, this paper provides a new implementation of debugging tool named MDSPTool which supports embedded multi-core system. It is based on Eclipse and plug-in development environment, and can seamlessly integrate with WorkBench IDE. Experimental results show that MDSPTool, which has an excellent user interface, provides easily used methods for parallel debugging and highly integrated functions for monitoring and measurement. Therefore, MDSPTool improves the efficiency of embedded software development.