The invention aims at provides a power communication network route allocation method based on nonuniformity business balance. According to the method, the security of a power communication network isimproved after routes are allocated. The method comprises the following steps of establishing a whole network energy function; calculating the first K shortest paths of each piece of business of the power communication network according to a K shortest path algorithm, and taking the first K shortest paths of each piece of business as k alternative routes of the corresponding business; and taking minimization of a whole network energy value Z as a target function, and obtaining two alternative routes from the k alternative routes of the corresponding business as a master route and a backup route of the corresponding business. According to the method, the whole network energy function is established; according to the whole network energy function, whole network average risk degree, whole network risk balance degree and business route separation constraint are introduced into the whole network energy function, so a whole network energy model based on the nonuniformity business balance isformed; and the minimization of the whole network energy value Z is taken as the target function, and the alternative routes are obtained as the master route and the backup route of the correspondingbusiness, so the security of the power communication network is improved after the master and backup routes are allocated