A cover structure (10) and a battery pack (1) employing the cover structure (10) are provided. The battery pack (1) further includes a plurality of cells (400) and a box (600). The cover structure (10) includes a substrate (100) and an exhaust portion (200). The substrate (100) is configured to cover the box (600). The substrate (100) and the box (600) together form an accommodating cavity (61) to accommodate the plurality of cells (400) and foam adhesive arranged along a plurality of adhesive injection tracks (500) preset in the accommodating cavity (61). The exhaust portion (200) is provided on a middle portion of the substrate (100). The exhaust portion (200) is provided with a plurality of exhaust holes (212). An area between two adjacent adhesive injection tracks (500) corresponds to at least one of the exhaust holes (212).
