This invention belongs to the field of multi-live-room synchronous live streaming technology, specifically involving a method for multi-live-room synchronous live streaming based on AI digital humans. The method includes: deploying a system template; constructing audience profiles and script templates; rendering seeds and initializing a lightweight ledger; performing edge deterministic rendering during live streaming; employing distributed ledger recording and local perception optimization; performing playback verification based on the ledger and frame records; quantifying business effects and conducting offline training. This invention can reduce the cross-node consistency of visual and audio-visual aspects of digital humans in multiple live-streaming rooms, thereby reducing the perceptual latency on the viewing end and improving the real-time viewing experience for the audience.