Ankle joint fusion device

The invention provides an ankle joint fusion device. The ankle joint fusion device comprises a fusion block, wherein the fusion block is of a trabecular structure so that when the fusion block is implanted into an ankle joint, the cartilage tissue of the ankle joint can grow into the trabecular structure, and therefore after the ankle joint fusion device is installed in a joint where the cartilage tissue is removed in an ankle fusion surgery, new cartilage tissue can easily grow into the trabecular structure of the fusion block and is integrated with a trabecula in the recuperation process of a patient; no metal screws or external fixation brackets or bone round pins are needed for fixation; the problem that an ankle joint fusion device in the prior art does not facilitate joint fusion of the patient is solved.