The utility model provides a become deck -molding bridge inspection trolley, including arranging track, running gear, an actuating mechanism, an elevating gear, the 2nd actuating mechanism, cantilever, the 2nd elevating gear in roof beam body one side. Running gear can follow rail -engaging under an actuating mechanism's drive. An elevating gear and running gear are connected, and the one end of keeping away from running gear on an elevating gear is arranged to the cantilever to the cantilever is located the bottom of the roof beam body. The 2nd elevating gear arranges and keeps away from on the cantilever an elevating gear's one end to the 2nd elevating gear is close to liang tiwei and arranges orbital one side. Whenever, stride the bridge and only need can accomplish the inspection through an inspection trolley, can save the cost.