In order to identify and monitor the haze effectively, in this paper, we selected two MODIS images on 4th and 5th October, 2013. Based on spectral differences between different kinds of images and neural network model, a machine learning algorithm for identification of marine haze was established in this paper. By validation, the accuracy of the algorithm was more than 98%. With this haze detection algorithm, we can monitor haze for long time over East China Seas.