An electronic device, comprising at least: a battery cover, having a hole; a battery module, arranged on an inner side of the battery cover and comprising a battery and a battery protection circuit board connected to the battery, wherein the battery protection circuit board is arranged facing the hole, and along a thickness direction of the battery cover, the battery protection circuit board is projected to form a first orthographic projection; a decorative member, arranged on the battery cover and comprising a first decorative portion and a second decorative portion, wherein along the thickness direction of the battery cover, the first decorative portion is projected to form a second orthographic projection, the first orthographic projection and the second orthographic projection at least partially overlap, the first decorative portion has a first through hole that is in communication with the hole, wherein along the thickness direction of the battery cover, the second decorative portion is projected to form a fifth orthographic projection, the fifth orthographic projection is located on a side of the first orthographic projection away from the battery, and the second decorative portion has a second through hole that is in communication with the hole; a first functional device, located on a side of the battery protection circuit board facing the first decorative portion and arranged corresponding to the first through hole, wherein along the thickness direction, the first functional device is projected to form a third orthographic projection, and the first orthographic projection and the third orthographic projection at least partially overlap; a main board and an adapter circuit board, wherein the main board is arranged on a side of the battery protection circuit board facing away from the battery, and along the thickness direction, the second decorative portion is arranged corresponding to the main board, the adapter circuit board is connected to the first functional device and the main board, the adapter circuit board has an extension, the extension is located between the battery protection circuit board and the first decorative portion, and the first functional device is connected to the extension; and a bracket, wherein the bracket is located on an inner side of the battery cover, the main board is connected to the bracket, the bracket comprises a support portion, the support portion is located between the battery protection circuit board and the first decorative portion, and the first functional device is connected to the support portion, or the first functional device and the extension are both connected to the support portion, wherein along the thickness direction, a second gap exists between the support portion and the battery protection circuit board. a battery cover, having a hole; a battery module, arranged on an inner side of the battery cover and comprising a battery and a battery protection circuit board connected to the battery, wherein the battery protection circuit board is arranged facing the hole, and along a thickness direction of the battery cover, the battery protection circuit board is projected to form a first orthographic projection; a decorative member, arranged on the battery cover and comprising a first decorative portion and a second decorative portion, wherein along the thickness direction of the battery cover, the first decorative portion is projected to form a second orthographic projection, the first orthographic projection and the second orthographic projection at least partially overlap, the first decorative portion has a first through hole that is in communication with the hole, wherein along the thickness direction of the battery cover, the second decorative portion is projected to form a fifth orthographic projection, the fifth orthographic projection is located on a side of the first orthographic projection away from the battery, and the second decorative portion has a second through hole that is in communication with the hole; a first functional device, located on a side of the battery protection circuit board facing the first decorative portion and arranged corresponding to the first through hole, wherein along the thickness direction, the first functional device is projected to form a third orthographic projection, and the first orthographic projection and the third orthographic projection at least partially overlap; a main board and an adapter circuit board, wherein the main board is arranged on a side of the battery protection circuit board facing away from the battery, and along the thickness direction, the second decorative portion is arranged corresponding to the main board, the adapter circuit board is connected to the first functional device and the main board, the adapter circuit board has an extension, the extension is located between the battery protection circuit board and the first decorative portion, and the first functional device is connected to the extension; and a bracket, wherein the bracket is located on an inner side of the battery cover, the main board is connected to the bracket, the bracket comprises a support portion, the support portion is located between the battery protection circuit board and the first decorative portion, and the first functional device is connected to the support portion, or the first functional device and the extension are both connected to the support portion, wherein along the thickness direction, a second gap exists between the support portion and the battery protection circuit board.