The invention discloses a program control command processing method of a multi-function measurement instrument, and belongs to the technical field of electronic testing. According to the method, an SCPI command which extends and is compatible with SCPI specifications is provided for demand of a multi-mode multi-measurement-function program control command, SCPI commands with different functions are differently parsed, a command parsing speed is guaranteed to the most extent by a manner of adding multiple threads and critical-area protection and preempting a public command buffer area, and instrument state uncertainty brought by manners of multi-port multi-command buffer areas is avoided at the same time; a multi-measurement-function command format is expansively defined on the basis of a standard SCPI command grammar format, and the problem of how to differentiate commands in multiple command sets is well solved; and processing of the program control command is realized on the basis ofa manner of menu ID and program control ID mapping, and the problem of function processing of two parameter sources is solved. A code writing amount is greatly reduced, and a software scale is streamlined.