The invention provides a novel large-scale meat rabbit extensive cultivation device and a novel large-scale meat rabbit extensive cultivation method. The novel large-scale meat rabbit extensive cultivation device comprises a supporting plate, wherein an excrement scraping groove is formed below the supporting plate; a cultivation area is arranged above the supporting plate and comprises an exercise platform and toys; the supporting plate consists of a plurality of wood bars; a gap is reserved between two adjacent wood bars; a ventilation side plate is arranged at the peripheral end of the supporting plate; feeding troughs and water lines are formed in the ventilation side plate. The invention also provides the large-scale meat rabbit extensive cultivation method. By the adoption of the supporting plate, rabbit excrement can be leaked into the excrement scraping groove below the supporting plate; by the adoption of the ventilation side plate, a ventilation environment is ensured; by the adoption of the exercise platform, a passing pipe and a wooden toy, the exercise and playing of a meat rabbit are ensured; by the adoption of the feeding troughs and the water lines, feeding of the meat rabbit is ensured. The food supply of the meat rabbit can be ensured, requirements of the meat rabbit on playing and exercise are taken into full consideration, the meat rabbit can grow healthily, the meat rabbit tastes chewy and delicious, the economic benefit of the meat rabbit can be greatly improved, and the device and the method have important economic and social significances.