An antenna spring and an electronic device are provided. The electronic device includes a frame, an antenna spring, a circuit board, and an electrically conductive elastic piece. The antenna spring, the circuit board, and the electrically conductive elastic piece are all mounted on an inner side of the frame. The frame includes a frame antenna, the antenna spring is located between the frame antenna and the circuit board, and the antenna spring includes a fastening portion, an abutting portion, and a connecting portion. The fastening portion and the abutting portion are both fixedly connected to the connecting portion, the fastening portion is fixedly connected to the frame antenna, and a projection of the abutting portion on the connecting portion is spaced from the fastening portion. The electrically conductive elastic piece is mounted on a side that is of the circuit board and that faces the antenna spring.