The invention discloses a bridge detection trolley, which comprises an industrial personal computer, a frame, an ascending and descending mechanism, an operating mechanism, horizontal wheels, a data acquisition device, a pitching mechanism, a remote controller, a local area network control station and a monitoring center. The horizontal wheels for guiding are arranged at the front and rear ends below the frame and the lower end of the frame; a power machine drives the operating mechanism to realize advance and retreat on a bridge railing serving as a running track; the power machine drives the ascending and descending mechanism to realize ascending and descending; and the pitching mechanism arranged at the lower end of the ascending and descending mechanism is driven to swing up and down by the power machine. The data acquisition device arranged on the pitching mechanism realizes comprehensive examination of a bridge through the composite motion of the operating mechanism, the ascending and descending mechanism and the pitching mechanism, and stores the examination data to the industrial personal computer; and the data can be forwarded to other storage equipment or remotely transmitted to the monitoring center, so that automatic monitoring of the bridge and automatic analysis of diseases are realized. Multiple operation modes can be realized, and a line does not need to be closed in the examination operation; and the bridge detection trolley has simple structure and high work efficiency.