Compared with the tropospheric NO2 column concentration measured by the Monitoring Instrument Ozone(OMI) detector mounted on the AURA EOS satellite, the mobile passive differential optical absorption spectroscopy (DOAS) has higher spatial resolution. It can better reflect the distribution of NO2 pollution in a region. Therefore the distribution of NO2 column concentration over Shijiazhuang was reconstructed using data from OMI database(June 2013), combined with the wind data, the variation of spatial and temporal patterns of the distribution of NO2 concentration under southwest wind in Shijiazhuang was obtained. At the same time, the mobile DOAS system was used to observe the distribution of NO2 concentration on the southwest transport channel (Shijiazhuang-Baoding-Beijing). Finally, the exponentially-modified Gaussian (EMG) method was used to estimate the NOx emission rate over Shijiazhuang in June 2013. The results showed that, the emission fluxes of OMI NOx and emission fluxes modified by mobile DOAS was 195.8 mol/s and 160.6 mol/s, respectively. The reason why the latter is less than the former may be the low spatial resolution of the satellite.