The invention provides a signal analysis interface intelligent matching method based on a switching matrix. Low-frequency signal test matching is automatically achieved as a hardware matrix switch is combined with software to perform pre-judgment and control; according to the requirement of a tested signal, hardware includes multiple multiplex switches, single-pole single-throws, double-pole double-throws and the like is involved in forming the switching matrix so as to achieve the aim of increasing or decreasing the number of tesingt ports and later-class analysis channels and realize the function of multiple-parameter measurement on a single-path signal and on a multi-path signal. The tested signal undergoes rough testing and comparison, finally, the automatic identification function of a coupling manner and a measuring range is achieved and a signal channel is automatically divided. According to the signal analysis interface intelligent matching method based on the switching matrix, a matrix switch and the concept of intelligent control are introduced, hardware resources can be saved and in addition, the testing ports can be flexibly expanded. The testing function is added, the automatic identification function of multiple coupling manners, multiple kinds of impedance and multiple kinds of measurement ranges can be realized and design is flexible.