Provided are a motion analysis method, a motion analysis device, a motion analysis system, and a program with which it is possible to reduce time and effort when performing an editing operation on a captured image. The motion analysis method includes: an action detection step (S100) for detecting, using an output signal of a sensor unit 10, an action in the motion of a user 2; an image-data-acquisition step (S110) for acquiring image data of the motion of the user 2 as captured by an image-capture device 30; and an analysis-information generation step (S120) for associating the acquired image data with the detected action.