The invention provides the LED automobile lamp. The LED automobile lamp comprises a lens, a heat dissipation shell, a light source stand column and a rear cover, wherein a light reflection surface isarranged inside the radiating shell; the light source stand column is arranged at the bottom of the heat dissipation shell; the lens is arranged at the top of the heat dissipation shell; the rear cover is arranged at the bottom of the light source stand column; a first light source plate and a second light source plate are symmetrically arranged on the two sides of the light source stand column; the first light source plate and the second light source plate extend into a light reflection area defined by the light reflection surface and the lens; the top end of the light source stand column isprovided with a light shielding piece; and the bottom end of the light source stand column is provided with a step plane closely matched with the heat dissipation shell. The novel LED automobile lampstructure and the light distribution design are provided, so that elimination of installation error of parts of a system is guaranteed, and the product consistency of batch production is guaranteed. Due to the optimized heat conduction and heat dissipation design, the working junction temperature of the LED is ensured to be in a relatively low safety range, and it is guaranteed that the LED automobile lamp has the theoretic high light efficiency, long service life and high reliability.