Aiming at the problems of dispersion regulation and structural paramete r optimization in dual-ring resonant dispersion compensation microstructure fiber, a dispersio n characteristic prediction method of orbital angular momentum mode based on neural network is pr oposed in this paper.By designing a multi-layer neural network model and adjusting the number of hidden layers, neurons and super parameters of the neural network,accurate dispersion predicti on results are obtained.This proposed method establishes the relationship between fiber structures and dispersion characteristics.Compared with the traditional optical simulation method,this m ethod can calculate the dispersion characteristics for different fiber structures more qui ckly and efficiently, which could provide a new approach for the design and optimization of fiber struc tures.