Abstract: A crop-livestock circulation system, including a planting greenhouse, a fish pond and a livestock greenhouse. A rear portion of the livestock greenhouse is provided with a drinking trough. A first side of the livestock greenhouse is provided with a scraper. A portion of a bottom plate close to a second side of the livestock greenhouse is provided with a collection port. A bottom of the collection port is provided with a manure collection trough connected to a fermentation treatment chamber. The fish pond is provided with a sewage discharge port connected to a sewage collection unit. The sewage collection unit is connected to the fermentation treatment chamber. The fermentation treatment chamber is connected to a conveying unit, which is connected to a spraying device. The spraying device is provided in the planting greenhouse.