Research conclusions: From the research on the reinforcement technology for treating the earthquake disaster of the Bridge 1# in Mianzhu of the Deyang-Aba Highway, it can be seen it is very important to do the following works well: (1) The shelling-out and high pressure grouting should be conducted to the crack. (2) The in-site reinforcement and replacement reinforcement should be conducted. (3) The original pier reinforcement and replacement reinforcement should be conducted to the damaged pier. (4) the reinforcement should be conducted to damaged stuck steel plate of the girder. (5) The replacement reinforcement should be conducted to the damaged bridge deck.