A magnetic buckle device has a first base, an inserting component, a second base, a first component, and a second component. The inserting component can be inserted into the first base, which engages the inserting component. The first base and the second base can move or rotate with respect to each other, thereby converting the inserting component into the unbuckled state. The first and second components are respectively mounted on the second base and the inserting component. When the inserting component is close to an inserting component receiver of the first base, a magnetic attraction force is generated between the second component and the first component for drawing the inserting component to the inserting component receiver. When the inserting component is inserted completely, the magnetic attraction force auxiliary keeps the inserting component in the buckled state, so any additional buckling structure is not necessary.