The invention discloses a low frequency ripple wave inhibition digital control device for a flyback micro inverter based on power prediction. A controlled member of the device is the flyback photovoltaic micro inverter, the digital control device adopts a power prediction modulation ratio calculation module to obtain the modulation ratio of the flyback inverter, and the output power of the flybackinverter is equal to an expected value, so that low frequency ripple waves inside the output current of a photovoltaic cell are inhibited, and the service life of the photovoltaic micro inverter canbe prolonged by adopting a thin-film capacitor with relatively small tolerance value. Through the embodiment, relatively low cost of the photovoltaic micro inverter can be realized, and the photovoltaic micro inverter has low frequency current ripple wave inhibition capacity and the maximum energy acquisition rate.