The invention relates to a multi-vibration source multi-reference narrow band adaptive method of mechanical active vibration isolation. The method is used for solving a problem of vibration isolation caused by the fact that multiple mechanical devices are simultaneously installed on the same raft rack. Multiple sensors for picking vibration of a vibration source are installed in a position where the vibration signals of the vibration source can be mutually independently acquired and enter into corresponding reference signal channels in the method; control signals are calculated in each reference signal subsystem; and finally, time domain control signals are synchronized and output and active isolation of the vibration is performed. According to the invention, a divergence problem of a narrow band adaptive method where multiple mechanical devices simultaneously excite different vibration signals with the similar frequency is solved; and the method is characterized by stable convergence performance and favorable control effects.