The giant panda (Ailuropoda melanoleuca) is regarded as one of the most imperiled mammals in the world. The quality and quantity of giant panda habitat have been continually and dramatically degraded due to increasing human activity and to natural disasters. In order to conserve the remaining panda populations effectively, there is a critical need to establish or restore corridors between remaining islands of habitat. This is considered essential for reducing the risk of local population extinctions. The population of giant pandas in the Xiaoxiangling Mountains is the smallest, and the habitat there is seriously fragmented. To connect the existing habitat patches and protect its local population of giant pandas, we used quantitative habitat assessment methods to assess the current structure of the Xiaoxiangling Mountains habitat and to design wildlife corridors to increase connectivity. The habitat suitability index in the study area was assessed using Maximum Entropy analysis, with "area under curve" of 0.9939 and 0.9890 for training and test sets, respectively. The habitat patches were identified following the threshold defined by the maximum Yourdon's index. There are seven isolated habitat patches in the Xiaoxiangling Mountains (i.e., Zima, Mamadi, Gaoqiao, Shihuiyao, Luba, Dahuodi, and Wanba). Based on the least-cost path and circuit theory models, nine corridors between those habitat patches were designed. Among these corridors, the Zima-Mamadi corridor connects the two largest habitat patches, which are also where most of the giant panda activities have been recorded. Given its ecological significance, we propose that construction of Zima-Mamadi corridor should be considered top priority. In addition, some of the corridors adjoined or even overlapped. Therefore, we suggest merging these corridors into a "corridor group". A "corridor group" is defined as a network constituted by two or more closely adjacent corridors, which could interconnect several habitat patches simultaneously and effectively increase the exchange between populations in those habitat patches. Unfortunately, because of the presence of farmlands, some sections of the corridors formed extremely narrow channels. Some of these channels are narrower than the minimum efficient width of giant panda corridor (2230 m), and so their intended function could be severely impacted. However, given the complexities of land ownership, determining a way to construct corridors among farmlands should be a focus of future conservation work.