The invention provides a glass wiping device with a resistance strain gauge. The glass wiping device comprises a body, a control unit and a boundary detection unit. The boundary detection unit comprises an action component, a spring element, a limiting component, a connecting rod and the resistance strain gauge; the body is provided with a detection surface, a limiting surface and a guide hole; the guide hole is formed in a position between the detection surface and the limiting surface, and the central axis of the guide hole is perpendicular to the detection surface; the spring element sleeves the action component, one end of the spring element is butted to the action component, and the other end of the spring element is butted to the guide hole; the limiting component is arranged on the action component; the action component can be driven by elastic force of the spring element to move and to be protruded out of the detection surface until the limiting component clings to the limiting surface; one end of the connecting rod is fixedly connected with the inner end of the action component, the other end of the connecting rod is fixedly connected with the body, and the connecting rod can be driven by the action component to be bent and deform. The glass wiping device has the advantages that voltages at two ends of the resistance strain gauge can be detected and compared, so that whether the glass wiping device reaches boundaries of glass or not and the depths and the widths of gaps can be judged, and the safety can be improved.