Shield structure and electronic device

An electronic device, comprising:

• a circuit board, wherein a plurality of electronic components are disposed on a surface of the circuit board;
• a shield frame, connected to the surface of the circuit board;
• a first shield layer, covering and connected to a first side that is of the shield frame and that faces away from the circuit board, wherein the circuit board, the first shield layer, and the shield frame enclose a first shield cavity, and the plurality of electronic components are located in the first shield cavity;
• and
• at least one second shield layer, stacked with the first shield layer, wherein the at least one second shield layer is on a first side that is of the first shield layer and that faces the circuit board, and is on a first side that is of at least one electronic component and that faces away from the circuit board, an orthographic projection of the second shield layer on the circuit board and an orthographic projection of the at least one electronic component on the circuit board at least partially overlap, and wherein the at least one second shield layer is insulated from the electronic components, the at least one second shield layer is coupled to the circuit board;
• and
• a first insulation layer, wherein the first insulation layer is between the at least one second shield layer and the first shield layer, and wherein electrical conductivity of the at least one second shield layer is greater than electrical conductivity of the first shield layer.