Method and device for detecting roughness of fitting surface of complex conduit

The invention relates to the technical field of roughness measurement, in particular to a complex conduit fitting surface roughness detection method and device, and the device comprises a detected conduit, and also comprises a portable roughness instrument which is used for detecting the roughness of the fitting surface of the detected conduit; the adjusting bracket is connected with the portable roughness instrument and is used for adjusting the angle of the portable roughness instrument; and the height adjusting assembly is connected with the adjusting bracket and is used for adjusting the height of the portable roughness instrument. The device has the advantages of being simple in structure, convenient to operate, easy to manufacture, low in overall cost and the like. Compared with an existing device, the device has the remarkable difference and the biggest advantages that the device can adapt to matching surface roughness detection of complex products in various shapes, the clamping process of the product