The integrated satellite-earth calibration performs preliminary calibration of ocean color satellite sensors through onboard solar calibration, and further reduces the uncertainty in the solar calibration and atmospheric correction processes by using system vicarious calibration. This article provides a detailed introduction to the methods and processes of integrated satellite-earth calibration, key issues identified and targeted solutions. It covers aspects such as the periodic influence of the solar beta angle during calibration and the correction of the anisotropic degradation of the solar diffuser. Through practical application on China's ocean color satellites, the accuracy of integrated satellite-earth calibration and the consistency of data products have been analyzed and validated. The results show that the integrated satellite-earth calibration accuracy of China’s ocean color satellite meets research requirements, and the data products exhibit high consistency with international mainstream satellites. Through high-precision integrated satellite-earth calibration, the China’s ocean color satellite can provide accurate observational information for ocean monitoring and environmental protection, and provide a solid foundation for independently generating climate data records.