An elastic piece assembly applied to an electronic device, wherein the electronic device comprises a first component and a second component that are capable of sliding relatively in a first direction, and the elastic piece assembly comprises a support, an electrical contact assembly, and two conductive elastic pieces: the electrical contact assembly is configured to be connected to the first component, and the support is configured to be connected to the second component; and two ends (432, 433) of each of the conductive elastic pieces are connected to the support, the conductive elastic piece is provided with an electrical contact section bent toward the electrical contact assembly, and the electrical contact section is located between two end portions of the conductive elastic piece; the conductive elastic pieces are separately and sequentially arranged in the first direction, and when the first component and the second component slide relatively, the electrical contact assembly abuts against the electrical contact sections of one of conductive elastic pieces to connect the electrical contact assembly to the conductive elastic pieces; wherein the electrical contact section comprises a first inclined part, a first contact part and a second inclined part that are connected in sequence, the first contact part abuts against the electrical contact assembly, and the first inclined part and the second inclined part are inclined toward the electrical contact assembly, wherein the conductive elastic pieces each comprise a fixed end fixedly connected to the support and a connecting end movably connected to the support, and the electrical contact section protrudes toward the electrical contact assembly; and the connecting end is capable of moving relative to the support to limit a protrusion height of the electrical contact section relative to the support, wherein the electrical contact sections of the two conductive elastic pieces face opposite directions, the two conductive elastic pieces are parallel to the first direction, and a distance between the electrical contact sections of the two conductive elastic pieces is equal to a sliding distance between the first component and the second component, and wherein the two conductive elastic pieces are staggered in the first direction. the electrical contact assembly is configured to be connected to the first component, and the support is configured to be connected to the second component; and two ends (432, 433) of each of the conductive elastic pieces are connected to the support, the conductive elastic piece is provided with an electrical contact section bent toward the electrical contact assembly, and the electrical contact section is located between two end portions of the conductive elastic piece; the conductive elastic pieces are separately and sequentially arranged in the first direction, and when the first component and the second component slide relatively, the electrical contact assembly abuts against the electrical contact sections of one of conductive elastic pieces to connect the electrical contact assembly to the conductive elastic pieces; wherein the electrical contact section comprises a first inclined part, a first contact part and a second inclined part that are connected in sequence, the first contact part abuts against the electrical contact assembly, and the first inclined part and the second inclined part are inclined toward the electrical contact assembly, wherein the conductive elastic pieces each comprise a fixed end fixedly connected to the support and a connecting end movably connected to the support, and the electrical contact section protrudes toward the electrical contact assembly; and the connecting end is capable of moving relative to the support to limit a protrusion height of the electrical contact section relative to the support, wherein the electrical contact sections of the two conductive elastic pieces face opposite directions, the two conductive elastic pieces are parallel to the first direction, and a distance between the electrical contact sections of the two conductive elastic pieces is equal to a sliding distance between the first component and the second component, and wherein the two conductive elastic pieces are staggered in the first direction.