Progressive fall of large-span suspended ceiling occurred under only low ground motion intensity, and structure is only intact at the same time. Based on seismic investigation, the progressive fall resulted from both the insufficient anchorage between the ceiling and the structure and lacking of the lateral force bracing. Moreover, seismic design and construction of ceiling should be clarified according to seismic zones and seismic design category. Then local reinforcement is recommended to prevent the local fall from developing into a global fall.