The lower tier of the cage provides a spacious living and breeding space for the female rabbit, and the upper layer is fattening for the pens. This type of cage has a deep birthing box and a large space. It is not easy to take the rabbit out of the cage after the mother rabbit has given birth to nurture the rabbit, so as to ensure the safe transition of the rabbit. After one month, the rabbit only needs to isolate the mother rabbit to other delivery rooms , the young rabbits can continue to live and grow in the original delivery room and the lower cage. The female rabbit is an adult rabbit, and the growth requirements have little effect on the environmental changes. The young rabbits are juvenile rabbits with high environmental requirements. Environmental changes can easily cause the young rabbits to produce stress responses, causing the young rabbits to grow slowly for 2-3 days. and diarrhea. The young rabbits are fattened in the original box. The initial environment does not change, which is conducive to healthy and smooth growth. The lower cage has a large space for movement. As the young rabbits grow to a certain size, some young rabbits can be adjusted to the two-layer fattening cage. The advantage of this method is that the young rabbits can be slaughtered in 40 days, which greatly saves the cost of feeding and improves the slaughter rate.