China ocean satellite, HY-1, is the first one applied to ocean research and exploitation, which has two payloads. Multi-spectral CCD camera is one of two payloads. MS-CCD camera will be applied to seacoast dynamic observation and taking the messages of ocean color. The camera has four spectral band and can get images about 250 m GSD and 500 Km swath at the altitude of 798 Km. In this paper, we will introduce the main parameters of camera, such as, spectral band, resolution, dynamic range, SNR, MTF, registration accuracy and polarization.