The report evaluates the ecological security barrier of Qinba Mountain area in southern Gansu from three aspects：ecological environment，ecological economy and ecological society. The study indicates that the ecological security situation of the region is fine，and the ecological security degree reaches safe in 2017. Tianshui’s ecological security status is ideal，and ecological security degree to achieve security，which is better than that of Gannan Tibetan Autonomous Prefecture and Longnan. At the same time，due to various constraints，the construction of the ecological security barrier in this region has entered quite difficult period and hard work. The fact that per capita urban road area，tertiary sector of the economy，urban greening，sewage treatment，scientific and technological innovation，and personnel training are all still not optimistic. The report puts forward some feasible countermeasures，such as top-level design to promote the construction of ecological security barrier，policy support to support the implementation of ecological priority Green Development Strategy，and tackling both the symptoms and root causes to build Green Water and green mountains.