Detection tool and detection and repairing method for vehicle filtering device

The invention relates to a detection tool and a detection and repairing method for a vehicle filtering device. The detection tool mainly comprises a fixed device, a telescopic rod and a detection head, wherein the connection manners of the fixed device, the telescopic rod and the detection head are as follows: the fixed device is fixedly connected with the telescopic rod, and the detection head isarranged on the telescopic rod; and the detection head mainly comprises a fixed sleeve ring, a clamping device and a detection sheet, wherein the connection manner of the fixed sleeve ring, the clamping device and the detection sheet are as follows: the clamping device is fixedly connected with and arranged on the fixed sleeve ring, and the detection sheet is arranged on the clamping device. Through the detection method using the tool provided by the invention, a fault point on a filtering device can be quickly and accurately detected; simple operation and low repairing cost are achieved forrepairing treatment to the