To provide a buckle switch and buckle device wherein a first switch section and a second switch section are unitized to provide improved assembling workability and increased production efficiency.As a tongue plate is inserted to a buckle body to move a slider, a pressing segment 23b of the slider rotates a leaf spring 46 in a direction a and, hence, a depressible portion 44c is depressed to cause a movable member 44 to move in a direction X2. At this time, a stationary contact 71a moves into and is pinched by pinch members 53 of a movable contact 50 disposed on the movable member 44, rendering the switch section SW1 to assume a conductive state. Concurrently, since a magnet M2 is placed in opposition to a magnetic detecting element 61, a second switch section SW2 is switched over. By unitizing the first and second switch sections, assembling workability of a buckle switch 40 to the buckle body can be improved, enabling an increase in production efficiency.