The invention relates to a test method and device for simulating the interlayer wearing of flexible standpipe armors. The test device comprises a universal testing machine, a lower testing machine clamp, a lower sample clamp, an upper sample clamp and an upper testing machine clamp. The test method comprises the following steps: 1, sample preparation; 2, sample assembling; 3, sample installation; 4, device preparation; 5, test starting; 6, test ending; and 7, obtaining of a test result. The universal testing machine applies alternate tensile load to the sample clamps, samples are axially elongated and retracted to realize wearing between samples in the same layer and between interlayer samples, the samples are dismounted after test, and the wearing condition is judged by observing damages and detecting the mass loss of the samples per unit length.