A LED filament light has a bulb shell, a base portion, a filament module, a top spreading structure, a bottom spreading structure, a lamp cap and a driving piece. The filament module is placed in the containing space formed by the bulb shell and base portion. The filament module is composed of a plurality of filaments. The top of the plurality of filaments connects to the top spreading structure. The bottom spreading structure extends from the base portion, the bottom of the plurality of filaments connect to the bottom spreading structure. The top spreading structure is supported only by the plurality of filaments. The driving piece is placed in the lamp cap to provide electric power required for the plurality of filaments.