The invention discloses an infrared light-emitting diode. The infrared light-emitting diode comprises a light-emitting chip, a first supporting chip, a second supporting pin, a cup body, a packaging body and a gold wire, one end of the cup body is of a plane structure, the light-emitting chip is fixed to the plane structure and covered with an electromagnetic shielding cover, and the bottom of the electromagnetic shielding cover is connected with the plane structure through conducting resin; the packaging body is a sealed cavity formed by bonding a silicious body and a glass body, the glass body protrudes to the sealed cavity to form a spherical surface micro-cavity structure, and the light-emitting chip and the spherical surface micro-cavity structure are corrected and aligned. The infrared light-emitting diode is uniform in emitted light and excellent in condensation performance.