A wearable device and a wearable magnetic strap are disclosed. The wearable device includes a first magnetic strap, a second magnetic strap, and a wearable component. One end of the first magnetic strap is fixed on the wearable component, and one end of the second magnetic strap is fixed on the wearable component. The first magnetic strap and the second magnetic strap are molded from a mixture of plastic and magnetic powder, and the first magnetic strap and the second magnetic strap are gaplessly attached to each other and attracted to each other.