The invention discloses an active nondirectional loudspeaker system with equalization. The system comprises an audio signal interface. The audio signal interface is connected to a digital filter. The digital filter comprises an inverse equalizer and a band pass filter. The digital filter is connected to a power amplifier. The power amplifier is connected to a loudspeaker. The loudspeaker comprises an inverse horn shape sound box and a low frequency sound box. In the invention, the size is small and the system only works in a test frequency scope required by a correlation standard; through testing a spatial multi-point transmission function of a loudspeaker, according to the multi-point transmission function, one digital signal filtering system is designed; an amplitude frequency response of the digital signal filtering system is at a peak valley and is inverse with an average amplitude frequency response of spatial multiple points of the nondirectional loudspeaker system so that purposes that the amplitude frequency response of the loudspeaker system is straight and an adjacent frequency range amplitude change is small are reached; and the system can be used for architectural acoustics and electroacoustic testing.