An exemplary sliding mechanism (10) includes a main plate (11), a slide plate (12) slidably connected to the main plate (11), and a linkage module positioned between the main plate (11) and the slide plate (12). The linkage module includes an elastic member (15) and a guiding shaft (17). The elastic member (15) is sleeved on the guiding shaft (17). Two ends of the guiding shaft (17) is rotatably connected to the main plate (11) and the slide plate (12) respectively. The elastic member (15) is configured for driving the slide plate (12) and enabling the slide plate (12) to slide along the main plate (11) after the slide plate (12) is manually moved to a predetermined position with respect to the main plate (11).