The invention relates to an IWT-Schur-based region-of-interest reversible watermark embedding and extracting method. The method comprises steps of during watermark embedding, firstly, performing wavelet decomposition on a carrier image, screening to obtain a region-of-interest coefficient of each component, then encrypting the watermark by using Arnold transformation, carrying out integer wavelettransformation on the scrambled watermark to obtain a series of sub-bands, and finally, correspondingly embedding each sub-band of the watermark into each sub-band ROI of the carrier image by using matrix Schur decomposition. Compared with the prior art, the method has the advantages that nondestructive recovery of the region of interest is guaranteed, it is guaranteed that the watermark is completely embedded into the whole region of interest, and the watermark can better adapt to the ROI coding characteristic.