An SMA motor, a camera module, and an electronic device are disclosed in this application. The SMA motor includes an upper component, a lower component, a plurality of bearings, and four SMA wires. The lower component and the upper component are stacked, the plurality of bearings are located between the lower component and the upper component, one end of each bearing is fixedly connected to the lower component, and the other end is slidably connected to the upper component. One end of each SMA wire is fixedly connected to the upper component, and the other end is fixedly connected to the lower component. The SMA wires shrink when being electrified and heated. Each bearing includes a lubrication coating. The lubrication coating is disposed at an end that is of the bearing and close to the upper component and is in contact with the upper component. The SMA motor reduces a friction coefficient between the bearing and the upper component, to improve travel control precision of the SMA motor, reduce a jitter amount of the upper component, and reduce low-frequency ripple jitter when an image shooting preview interface is still.