Muscle fatigue monitoring system

A muscle fatigue monitoring system, comprising: an sEMG amplifier module (101) for receiving sEMG signals and amplifying the received sEMG signals; a wave filter module (103) connected to the sEMG amplifier module (101); a bit stream converter (105) connected to the wave filter module (103) and used to digitize the sEMG signals and convert the sEMG signals to a discrete signal on the basis of a single threshold value but not to digitize the entire sEMG signals; and a bit stream cross-correlator (107) connected to the bit stream converter (105), the bit stream cross-correlator (107) comprisinga plurality of correlation cascades (201) that are connected in series, a plurality of counters (303) respectively connected to the plurality of correlation cascades (201), and a maximum value selector (205) connected to the counters (303), the bit stream cross-correlator (107) being used to continuously correlate the sEMG signals during a given time window, calculate all time points with the samesEMG signal, repeatedly c