The invention discloses a novel power transmission and distribution fee allocation method. The method is characterized in that the method is characterized by comprising the following steps; obtainingbasic conditions of individual users in the power transmission system, including four parts such as user electric quantity, user capacity, incremental service and user characteristics; performing unified processing on the basic conditions of the individual users and acquiring standardized indexes of each user; calculating the cost shared by each user by using a sheley value method in a cooperativegame theory; multiplying a shapley value corresponding to each user by a power transmission fixed cost; acquiring the cost which should be shared by each user wherein the user capacity is a fixed cost reflecting power supply; even if a user does not use electricity, enabling a supplier to make preparation for power supply, generating corresponding cost from the aspect, wherein the cost is only related to the installation capacity of the user. A preparation method of the novel power transmission and distribution cost allocation method adopts two different methods to allocate the power transmission and distribution cost and can be selected according to the actual situation.