The invention discloses a non-reference video stability quality evaluation method based on inter-frame motion smoothness, and belongs to the field of video processing. The method comprises the following steps: extracting adjacent frame feature points by using a SURF (Speed Up Robust Features) algorithm; performing grid processing on video frames; calculating grid homograph matrixes; constructing binding paths by the homograph matrixes; calculating the smoothness of the binding paths; and synthesizing the smoothness of all the binding paths to obtain a final video stability quality evaluation result. Compared with an existing method, the method has the advantages that the smoothness degrees of the paths are represented by intrinsic geodesic curvatures of binding motion paths, so that very high consistence with subjective quality evaluation, and relatively high robustness, flexibility and efficiency are achieved.