Abstract: Marine seismic data from sparker sources exhibit strong noise interference, complex wavelet morphologies, signal distortion due to cables' feathering and undulation, and severe multiple wave interference, all of which greatly affect the imaging quality of seismic data. Based on the characteristics of marine seismic data from sparker sources, this study established a data processing workflow and elaborated on the key technologies involved, including LIFT high-fidelity noise suppression, cable drift correction, surface-consistent simulated annealing static correction, wavelet processing, and free surface multiple suppression technologies. The application to actual data indicates that this processing workflow can effectively address the challenges associated with marine seismic data from sparker sources, improve the signal-to-noise ratio, restore the wavelet bandwidth, and produce seismic sections with superior broadband imaging and clearly defined geological features. This study provides a novel technical means for the application of marine wide-azimuth seismic data.