The invention discloses a seven-rod pose-variable pavement-based vehicle-mounted pavement crack detection system verifying device, and aims to solve a verifying problem of a variable-pose pavement detection result of a vehicle-mounted pavement crack detection system. The seven-rod pose-variable pavement-based vehicle-mounted pavement crack detection system verifying device mainly comprises a base(1), a crack verifying bench (2) and a hydraulic cylinder (3). The seven-rod pose-variable pavement-based vehicle-mounted pavement crack detection system verifying device which is small in occupied space, simple in structure, high in verifying accuracy, easy and convenient to operate, easy to mount, relatively low in cost and reliable in performance is provided.