Abstract: In recent years, the ship noise based geo-acoustic inversion is one of the hot research topics. At present, most inversion methods using ship noise rely on multi-dimensional seabed models, which increase the complexity of inversion. Therefore, based on the single seabed parameter model, a single seabed parameter inversion method by using ship noise as sound source is proposed. Based on the experimental data, the single seabed parameter is inverted, and by which, the transmission loss in the experimental sea area is predicted. Finally the relationship between single seabed parameter and frequency is fitted and studied, and the effectiveness of the inversion methods is verified.