The invention relates to the technical field of car lamps, and particularly relates to an LED automobile head lamp. The LED automobile head lamp comprises a uniform temperature plate, an LED-COB
light source, a
bulb metal outer cover, finned radiators and fans, wherein the uniform temperature plate adopts a liner flat plate structure, and a vacuum vapor chamber and a condensation cavity, as well as a capillary core layer are arranged in the liner flat plate structure; the LED-COB
light source is arranged on the outer surface of a vapor chamber in a pasting manner, at least two finned radiators are respectively arranged on two side surfaces of the condensation cavity in a pasting manner, and the fans are arranged at the rear ends of the finned radiators; the
bulb metal outer cover is made of a
magnesium alloy material; and except for the fans and a base cover, the rest components are connected in a
welding manner by adopting a SnAgCu
environmental protection solder paste at a high temperature. The LED automobile head lamp integrates four heat dissipation technological means including
phase change heat dissipation,
metal cooling fin heat conduction heat dissipation,
air cooling heat dissipation as well as heat dissipation through
radiation, and the heat dissipation efficiency is high; the quakeproof effect is good, and the structure is firm; and the LED automobile head lamp is convenient to
mount and accurate in focusing, can replace an original
bulb perfectly, and is applicable to various vehicle models.