The utility model relates to a comprehensive experimental device for a microcomputer interface, which is suitable for the experimental teaching of the class of computer interfaces in colleges and secondary schools. The device comprises an experimental platform which is formed by the assembly of a keyboard, a display, an A/D converter, a D/A converter, a wireless communication module, a USB interface module, a multirange digital voltmeter, a chip socket and a pinhole connector which are connected with a power supply wire and a grounding wire, and a corresponding experiment can be carried out by optionally selecting an integrated circuit chip through the arranged chip socket which is matched with a PC card or a microcomputer experimental instrument. The utility model has the advantages of simple structure, low cost, wide range of experiments, convenient use and flexible application.