Objective To evaluate the safety and efficacy of transcatheter closure of renal artery with a newly-developed double waist occluder in dogs. Methods A newly-developed double waist occluder was implanted in the right renal arteries of 12 healthy dogs. The location of devices was observed by angiography immediately, and 1, 3 and 6 months after occlusion. Renal specimens and occluders was observed after the animals were sacrificed and pathological examination was conducted. Also the endothelialization on the surface of the occluders was observed. Results Transcatheter closure of unilateral renal artery was successfully performed in all the 12 dogs. One dog died due to overdose of narcotic drugs, and the other 11 dogs survived well. Complete occlusion of the renal artery was achieved in 6 dogs immediately after the occluder was implanted, and complete occlusion was seen in all the dogs within 12 min after occlusion, with all the devices in good position and without translocation. Repeated angiography showed in all animals that the occluders were in good position and without residual shunt. The occluded kidneys became smaller than the opposite ones, with the surface of occluded kidney turning lumpy and hard. Endocardial cells started to cover the surface of occluder 1 month after closure and complete coverage was seen 3 months later. Conclusion The newly-developed double waist occluder is safe, feasible and effective, and it can be delivered in small sheath owning to its excellent trafficability.