A light string is provided. The light string includes a plurality of light-emitting components, a first polyvinyl chloride covered wire and a second polyvinyl chloride covered wire. The light-emitting components are configured to emit light having a same color or different colors. A first polyvinyl chloride covered wire is electrically connected to a first terminal of each of the light-emitting components and a first power terminal of a power supply component. The first polyvinyl chloride covered wire receives a first voltage from the first power terminal of the power supply component. The second polyvinyl chloride covered wire is electrically connected to a second terminal of each of the light-emitting components and a second power terminal of the power supply component. The second polyvinyl chloride covered wire receives a second voltage from the second power terminal of the power supply component.