An integrated debugger is designed for resolving a variety of monitoring program interface debugging problems in engineering application. The debugger utilizes multiple interface methods with modulated program communication. The hardware interface support serial port communication，network，User Datagram Protocol(UDP) and Transmission Control Protocol(TCP)，multicast way. Software interface utilizes the file，WINDOWS WM_COPYDATA communication，clipboard process communication，file map communication. Special protocol customization method is designed，by which any complex interface protocol can be customized to send，therefore the debugging software can get the required data. The analysis function is designed to monitor the correctness of the protocol data issued by the software. In any form of communication，a level of data editing function can be supported. This integrated debugger allows developers to quickly develop full set of monitoring applications in the laboratory，and to quickly extract communication problems from both sides.