Abstract: Ocean ambient noise is not only the interference acoustic field with respect to underwater targets detection, but also can be used to invert ocean physical parameters. Based on the ocean ambient noise data measured in a certain area of the East China Sea in summer, the time-frequency characteristics, statistical characteristics and wind-related characteristics of ocean ambient noise are analyzed in this paper. It is shown that during the experiment, the ocean ambient noise spectral level in the frequency band below 100 Hz is about 110 dB. The ocean ambient noise spectral levels at 100 and 300 Hz obey the chi-square distribution with degrees of freedom 8 and 6 respectively, and the noise spectral levels at 1 kHz and 3 kHz obey the normal distribution. Sea conditions have no significant effect on the probability distribution of low-frequency ocean ambient noise spectral levels, but have some effects on the mean and variance of the normal distribution of the noise spectral level in the high frequency range. As the frequency increases, the correlation coefficient between ocean ambient noise level and the logarithm of wind speed gradually increases, and the correlation coefficient above 1 kHz is between 0.6~0.7. The wind noise spectral level above 100 Hz basically does not change with depth. The results of this paper can provide technical support for the underwater target detection and the research on the application of ocean ambient noise in shallow seas.