The invention discloses a bridge crack recognizing device based on cameras and a linear
laser device. The bridge crack recognizing device comprises a lifting rod, cameras, an illuminating lamp, a
numerical control tank, a mounting table, a support frame, the linear
laser device, a
telescope, a side plate, a display screen, a
USB interface, a driving module, a detection module, an illuminating module, a control module, an image module and an auxiliary module. The bridge crack recognizing device has the beneficial effects that by arranging the
telescope, a bridge can be remotely observed, and abasis for judging whether the bridge is cracked is provided for a worker; meanwhile, cracks formed in the bridge are captured by virtue of the camera and the linear
laser device and are processed by the modules in the
numerical control tank, and obtained data and images are displayed on the display screen; and the bridge crack recognizing device is high in recognizing precision and high in workingspeed, the images can be clearly processed, accurate data can be obtained, the removable storage of the data is realized, the judgment effect is strong, and the device can be charged and can be usedat night.