The invention discloses a 360-degree complete cycle type LED lamp filament based on purple light chips. The 360-degree complete cycle type LED lamp filament based on the purple light chips is composed of a substrate, the chips, transparent silica gel, inorganic nanoparticles and phosphor gel; the phosphor gel is formed by organic silicon resin, multicolor phosphor and coupling agents through an injection moulding process, and is arranged on the outer side of the transparent silica gel. The chips are the purple light chips, the emission wavelength range is 360-410 nm, the chips are fixed to one face or the obverse side and the reverse side of the substrate, the inorganic nanoparticles are TiO2 or ZrO2, the particle size is 10-100 nm, the inorganic nanoparticles are distributed in the transparent silica gel, the multicolor phosphor is red, green and blue mixed phosphor of a phosphate or silicate system, and the coupling agents are silane coupling agents. The 360-degree complete cycle type LED lamp filament based on the purple light chips has the advantages of being high in color reduction degree, even and soft in light color, capable of emitting light by 360 degrees, high in light emitting efficiency, and the like.