The present disclosure discloses a multi-optical parametric oscillator (MOPO) with actively regulated energy group distribution ratio (EGDR), the multi-optical parametric oscillator includes a first laser, a first polarizer, a first focusing lens, an optical isolator, a 1/2 wave plate, a second focusing lens, a first cavity mirror, an aperiodically polarized lithium niobate crystal, a second cavity mirror, an aperiodically polarized lithium niobate crystal loaded with a Y-direction voltage, a bonded lithium niobate crystal, a third cavity mirror, a third focusing lens, a second polarizer, anda second laser. According to the invention, an aperiodic polarized lithium niobate crystal loaded with Y-direction voltage and a bonded aperiodically polarized lithium niobate crystal are arranged ina multi-optical parametric oscillation cavity, , through combination with the second extracavity laser, the rotation of the polarization state and energy conversion of the signal light in the oscillation cavity is achieved, the change of the ratio of the signal light energy in the cavity is achieved by adjusting the power of the second extracavity laser, and finally the purpose of actively controlling the output idle light energy component is achieved.