An objective of the present invention is to provide a push switch in which a sheet member is easily fused to a case without misalignment. The push switch (101) includes a movable contact member (1) that may be reversely operated through a pressing operation, a fixed contact member (3) that may come into contact with the movable contact member (1), the case (2) that accommodates the movable contact member (1) and has an accommodation part (S2), one end of which is opened, and a sheet member (5) disposed to cover the accommodation part (S2). When viewed from one side in a plane, an external appearance of the case (2) has a rectangular shape, and has a fusing target part fused such that the case (2) and the sheet member (5) follow the opening. Bonding layers (AD7) by an adhesive are disposed between the case (2) and the sheet member (5) at four corners of the upper surface of the case (2).