The invention discloses an optical channel multipoint fault self-healing method and system based on a power communication network. The method comprises the steps of in a power optical transmission network, monitoring sink nodes of optical paths, and positioning fault points; determining delay weight of transmission delay of each piece of business in the power optical transmission network, and determining balance degree weight of all business balance network degree in the power optical transmission network; establishing a mathematic model of a wide area communication transmission network routing optimization policy of the power optical transmission network according to the delay weight and the balance degree weight; and establishing a routing optimization model by taking the balance networkdegree and delay as targets and taking the path of each piece of stable control business as an optimization object, according to the mathematic model of the optimization policy and the stable controlbusiness borne on automatic rerouting triggered communication links.