The present utility model provides an acoustic cavity shield against high-frequency radiation and thermal energy in the 5G era. The shield is constituted by a metal outer housing, a plastic inner housing, and an adhesive arranged therebetween; the outer wall of said plastic inner housing is in close contact with the inner wall of said metal outer housing, and the outer wall of the plastic inner housing is joined to the entire inner wall surface of the metal outer housing. The beneficial effects of the present utility model are: by means of its electroplating layer, the metal outer housing has increased resistance to interference and high-frequency radiation. The plastic inner housing is attached on the outer housing, in comparison with a thermal insulation layer attached on the outer housing; operation is simple, automation is easy to implement, and production efficiency is greatly improved. The plastic inner housing covers the entire inner side of the metal outer housing, achieving full-range thermal insulation of the inner wall of the shield, such that thermal insulation performance is better and operability is broader. At the same time, the dual-layer structure also improves the fatigue resistance strength and service life of the shield.
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