Abstract: In order to better carry out the operational application of the Fengyun-4 meteorological satellite (FY−4A) lightning data, and based on the CGs and Doppler radar data, analyses are conducted on the impact features of squall-line processes affecting Jiangxi Province by the 22^nd typhoon, "Typhoon Mangkhut" on the evening of Sept. 17^th, 2018. Comparative analyses of two types of lightning data are mainly conducted as follows: the difference between their spatial distribution and time evolution, as well as their frequencies and the time evolution features of the radar echo area with reflectivity above 45 dBz. The relationship is analyzed between the satellite lightning and low-value TBB regions as well as the locations of the strong wind on the ground. The results show that: the CGs are mostly prior to the satellite lightning, and their time variation trends are basically the same, but the variation of satellite lightning is far more significant than that of the CGs. Satellite lightning is basically located in the area with TBB ≤−72 °C and adjacent areas. In the stage of severe convection influence, although the satellite lightning frequency fluctuates greatly, the frequency has the characteristics of varying with the enhancement of the severe radar echo area. The accompanying thunderstorm winds mostly occur in the frontier of the satellite lightning-intensive area, and are biased to the side of the moving direction, which is similar to the distribution features of CGs in the same period, indicating that they have a good auxiliary effect for identifying the possible locations of thunderstorm winds.