Abstract: Focusing on transfer and evolvement of initial perturbation from temperature of ocean to the underwater acoustic propagation,optimizing Ocean-Acoustic coupled model,comparing with remote sensing data,the reliability of the model is verified.On this basis,global and regional error development experiments are carried out by adding perturbation on the initial temperature of a controlled test.The results show that after 5 days evolution of the initial temperature field,the global perturbation of the propagation loss is satured,and the perturbation structure is basically consistent with the law of the dynamic ocean;for the target area in Kuroshio region,the initial perturbation in the upstream region is the fastest.This conclusion can provide the basis for the adaptive observation of ocean acoustics.