The embodiment of the invention discloses a method and device of link management facing green energy resource. The method comprises: detecting the volume of communication business in a network; when the volume of communication business in the network exceeds a preset business volume threshold, constructing a target shortest path tree to complete communication business according to an optimized green link mechanism at the business communication peak hours of the volume of preset communication business exceeding the preset business volume threshold; and when the volume of communication business in the network does not exceed a preset business volume threshold, determining a target communication network to complete the communication business according to the link dormancy mechanism dormancy link of the business communication peak hours of the presetting communication business volume not exceeding the setting business volume threshold. According to the embodiment of the invention, the utilization rate of green nodes of the green energy resource may be improved in the network communication process.