The invention provides a method and a device for measuring a transmission project man hour quota. The method comprises steps: influencing factor historical sample data and man hour historical sample data of the transmission project are acquired; according to the particle swarm iteration times, an inertia weight, a learning factor, a particle speed and a swarm scale for the transmission project man hour, a transmission project man hour particle swarm model is built; a fruit fly optimization algorithm is adopted to carry out model parameter optimization on the transmission project man hour particle swarm model, and a fruit fly particle swarm model is obtained; according to the influencing factor historical sample data, the iteration times of the fruit fly particle swarm model, an inertia weight and the optimal value of a learning factor are determined, the weight and the threshold of a fruit fly particle swarm radial basis function neural network measurement model are determined, and the fruit fly particle swarm radial basis function neural network measurement model is built; and according to the man hour historical sample data and the fruit fly particle swarm radial basis function neural network measurement model, a transmission project man hour quota measurement result is generated. The measured transmission project man hour meets the practice of the transmission project.