The invention discloses a functional colorful variable-color color point filament and a production process thereof. The color point filament uses a filament body as a core filament, the surface is coated with multiple short fibers in a discontinuously attached mode to form color points, and the length, roughness and separation distances of the color points can be identical and can be also different. The filament body is a graphene polyamide fiber filament, the color point A, B and C are respectively mixed with silver fiber by adopting three different types of photochromic viscose, graphene polyamide fiber is black, three photochromic fibers and the silver fiber are added to the black filament, the shortcomings of single polyamide fiber colors and difficult dyeing can be changed, the photochromic fibers can be added to make the polyamide fiber richer and more colorful, and the functional colorful variable-color color point filament has a wider application range.