The influential factors and classification method for risk in Beijing metro engineering are discussed in detail. Firstly

the adjacent grade of the adjacent piles must be determined. Two factors such as the spatial relationship between bridge piles and the fracture face induced by metro construction and the distance between piles and metro engineering are advised as evaluation indices. Secondly

the residual bearing capacity for adjacent bidge must be evaluated. The risk grade for adjacent bridge piles can be determined based on the adjacent grade being classified and the residual bearing capacity being certain. The different reinforcement measures must be adopted in term of the adjacent bridge piles risk grade. Consequently

the disposal procedure is formed to ensure the safety of adjacent bridge piles. Finally

a construction example for the adjacent bridge piles disposal procedure is described in detail.