Abstract: Against the backdrop of the national "dual carbon" goal and the construction of a new power system, this article deeply analyses the key factors in response to the weak emergency disaster resistance capability of the mountainous distribution network. With the concept of smart dispatch and the digitalization of the power grid, it starts from the dimensions of building organizational structure, incubating demonstration projects, digital innovation applications, and improving institutional guarantees. With 5G communication, quantum encryption, digital intelligence collection, and aggregation algorithms as the core, and digital and intelligent applications as the guidance, it establishes innovative characteristic applications of microgrid black start and cluster regulation, and forms a self-healing system for mountainous microgrids based on 5G + quantum technology "power supply, distribution network, and substation", and achieves the goals of efficient consumption of green energy, significant improvement of regional power supply reliability, and safe, reliable and economic operation of distribution network equipment under the new situation.It also provides typical demonstration cases for the development of green electricity of active distribution network with good economic benefits and promotion value.