Rare earth triphorspher luminopher is adapted to be the luminescent material inside the tube. Compared with the traditional calcium lacto-phosphate luminescent material, the luminosity factor is increased by 35% and its color rendering index can reach more than 85, which make the object well-bedded, more brighter, clearly and comfortable. Low light decay, life can reach more than 12000 hours. Different color temperatures are made to adjust different environment.