A globular illuminant device includes a hemispherical carrier, a circuit layer, a plurality of LED dies, an enclosure resin, and a hemispherical cover. The hemispherical carrier includes a carrying surface, a first cambered surface, and a first protrusion including a first surface. The circuit layer is placed on the first surface and the carrying surface. The LED dies are electrically connected to the circuit layer. The enclosure resin covers the LED dies. The hemispherical cover includes a joining surface, a second cambered surface, and a recess formed on the joining surface and concave toward second cambered surface. The hemispherical cover is assembled with the hemispherical carrier such that the joining surface is in contacted with the carrying surface while the LED dies and the enclosure resin are disposed within the recess.