Building external wall nondestructive testing equipment with marking structure and use method

The invention relates to the technical field of building detection equipment, in particular to building outer wall nondestructive detection equipment with a marking structure, which comprises a connecting roller, a tooth-shaped transmission belt, a detection marking device, a support clamping frame, a guide threaded plate and a servo motor, and the servo motor for transmission is fixedly mounted at the center of the upper end surface of the support clamping frame; guiding threaded plates used for supporting are symmetrically and fixedly connected to the upper end face of the supporting clamping frame, three sets of connecting rollers are symmetrically and fixedly installed on the lower end face of the supporting clamping frame, and five sets of detecting and marking devices are evenly and fixedly installed on the inner end face of the supporting clamping frame at equal intervals. By arranging the detection marking device, when detection is carried out, the transmission devices can be driven by the positioning