The present invention discloses an F-type pipeline erosion rate determining method and apparatus, and belongs to the field of petroleum technologies. The method comprises: obtaining a size of an F-type pipeline; obtaining an open degree of a flow controlling valve on the F-type pipeline in the ith operation process, a start pressure of the F-type pipeline in the ith operation process and a weight of fluid passing through the F-type pipeline in the ith operation process, wherein i>=1; determining a maximum erosion rate calculation formula according to the size of the F-type pipeline; and determining a maximum erosion rate of the F-type pipeline according to the open degree of the flow controlling valve on the F-type pipeline in the ith operation process, the start pressure of the F-type pipeline in the ith operation process, the weight of the fluid passing through the F-type pipeline in the ith operation process, and the maximum erosion rate calculation formula. The F-type pipeline erosion rate determining method and apparatus resolve a problem that an obtained maximum erosion rate of the F-type pipeline is low in accuracy, and improve accuracy of the obtained maximum erosion rate of the F-type pipeline. The present invention is used for determining the maximum erosion rate of the F-type pipeline.