The invention discloses a current-conducting plate and an LED light source with the current-conducting plate, and belongs to the technical field of LED light sources. The LED light source is technically characterized by comprising a heat dissipation plate, wherein a driving power source box is arranged on one side of the heat dissipation plate, the current-conducting plate is arranged between the driving power box and the heat dissipation plate, the current-conducting plate comprises an insulating substrate, a positive electrode current-conducting layer and a negative electrode current-conducting layer are arranged on the two sides of the insulating substrate respectively, a plurality of positive electrode current-conducting parts and a plurality of negative electrode current-conducting parts are matched and are alternately distributed on the edge of the insulating substrate in the circumferential direction, an insulating layer is arranged between the current-conducting plate and the heat dissipation plate, a plurality of light source modules are distributed on the portion, outside the driving power source box, of the heat dissipation plate in the circumferential direction, the light source modules are correspondingly connected with the driving power source box through the positive electrode current-conducting parts and the negative electrode current-conducting parts, and a plurality of magnetic attraction structures are arranged on the other side of the heat dissipation plate. The current-conducting plate and the LED light source with the current-conducting plate are reasonable in structure, rapid to install and good in lighting effect, and are used for indoor and outdoor lighting.