Lushan earthquake on April 20 led to a large number of secondary geological hazards, such as the development of dangerous rock mass collapse in Baoxing country, by which the lifeline provincial road S210 and more than 500 people were threatened, the earthquake relief work and post-disaster reconstruction were affected. Based on the full consideration of the nature situation of restoration region, pre-stressed anchor cable bolting, sheet pile retaining wall and rail barrier pile were adopted to form protective barriers and piles, which controlled the dangerous rock disasters at the top of dangerous rock mass in controlling region, colluvial deposit layer and the lower slope in the influence of rainstorm, and also overcame the weak bending resistance of passive network column. These measures won the precious time for the post-disaster reconstruction in Baoxing County.