Using the conventional meteorological observation data and NCEP/NCAR data, a severe blizzard weather event which occured in the southern part of Shandong on 23-24 November 2015 is analyzed. The results show that this is a typical backflow situation snowfall. The snowfall which is impacted by the northeast wind jet is weaker than the areas by southeast wind jet at 850 hPa. The strong southwest low-level jet at 700 hPa and the southeast low-level jet at 850 hPa provided enough water vapor. The strong convergence area of water vapor flux is the area with the heaviest blizzard.The divergence area over the blizzard area shows a vertical structure with weak divergence-strong convergence-strong divergence. Blizzard area, the high-altitude convergence center and strong ascend movement center coincidence are consistent. During the Blizzard, an inversion layer was maintained between 850 hPa and 925 hPa. The long duration of snowfall is an important reason for the heavy snowfall in the southern part of Shandong.