Wavelet transform (WT) has been widely used in many fields of data processing in that it can analyze the data both in time and in the frequency domain. The application of WT approach to seismic data processing has bright future, and hence further research into this field is of great value. This paper mainly discusses the thresholding methods in denoising of seismic data through WT approach. In addition, a hybrid strategy of combining WT with F-K filtering has been tried.