As the first satellite mission in China specifically for air quality monitoring, GaoFen-5 satellite, launched on May 9, 2018, has an integrated observation of both aerosol and trace gases with several atmospheric instruments such as DPC (Digital Polarized Camera) and EMI (Environmental trace gases Monitoring Instrument) onboard. With a series of on-orbit calibration and instrument tests, satellite retrieval algorithms of atmospheric components are examined with the preliminary GaoFen-5 data. With spectral and polarized radiance from DPC, fine mode aerosol optical depth was retrieved over East Asia. As the few on-orbit polarized satellite sensor, the multi-spectral, multi-angle, and polarization measurement of DPC is sensitive to microphysical and chemical properties of aerosol particles, and can be further explored to improve emission inventory and constrain model simulations. With the hyperspectral UV-VIS radiance in 240-710 nm from EMI observations, we implemented satellite retrieval of tropospheric NO2, SO2, and HCHO. Generally, instruments aboard GaoFen-5 satellite performs well, and the first retrieval results show reliable accuracy by comparison with similar satellite products and ground observations. Moreover, the integrated observation of several instruments on GaoFen-5 satellite favors improvement of retrieval accuracy such as considering influence of aerosol scattering in absorption of trace gases. In addition, combination of EMI and AIUS (Atmospheric Infrared Ultraspectral) can be used to separate tropospheric O3 from the total column amount.