An LED lighting unit includes a shell and an LED light source module; wherein, the LED light source module comprises a plurality of LEDs and a LED support, the LEDs are arranged on the LED support; the LED support consists of a foam metal layer which is made of foam metal with through holes, and a metal support layer, at least part of which is used to support the LEDs, the metal support layer is formed on the partial surface of the foam metal layer and is jointed with the foam metal layer into a whole body.