The utility model provides a full -period -luminosity LED (light emitting diode) lamp, including lamp shade and light source plate, lamp shade integrated into one piece and including two along the length direction holding chamber of symmetric placement in opposite directions, the holding chamber includes along perpendicular to length direction's cross -section that one crosses semicircle pitch arc and sets up the open end at these pitch arc both ends, the open end extends along length direction in succession, makes two holding chambeies are through this open end intercommunication, light source plate be fixed in along length direction the open end to towards two holding chamber emergent raies, light is followed respectively the holding chamber had the outside outgoing in position of semicircle line, formed the luminous effect of full period -luminosity. The utility model provides a full -period -luminosity LED (light emitting diode) lamp, it is few to assemble simple part, and the comparative difference in cost is low.