An all-rounded illumination enveloped fluorescent lamp. The light translucent materials used for lamp carrier disk fixing lamp tube, segregation board segregating wires, ballast circuit board and rear housing enables light emitted by the lamp tube to penetrate through the rear housing, thus causing the whole lamp body to illuminate as the lamp is turned on. The rear housing, which is made of PC plastic with proper amount of colour powder added, provides good light transmission property but is not transparent, thus shielding the ballast. No darkness zone is formed when in use. The lamp thus provides an advantageous aesthetic quality and illumination effect. The light transmission amount of the rear housing is increased further by setting the circuit board perpendicular to the lamp carrier disk or by adjusting the circuit board to be smaller than the bottom projection of lamp tube.