The invention discloses a production process having a good coloring effect for a color insulator. The production process comprises the following steps of 1, mixing, in which polytetrafluoroethylene powder, high-temperature ceramic pigment, a filling agent and polypropylene are prepared according to a proportion of weigh percent being 100:5:5:5; adding the polytetrafluoroethylene powder, the high-temperature ceramic pigment, the filling agent and the polypropylene into an agitator for uniform stirring; performing stirring for 1 hour; adding a binding agent and a plasticizer; and continuing to stir for 2 hours, wherein the temperature during stirring is controlled to 100-110 DEG C. The high-temperature ceramic pigment is added into the polytetrafluoroethylene powder, sintering in a drying oven is performed for 12 hours, injection formation is performed by an injection molding machine, so that the color insulator can have the characteristics of vivid color and color versatility, more importantly, the color insulator is very green, environmental-friendly and durable and is beneficial for a connector manufacturer to rapid identify a connection plugin, the color insulator has good electrical property, and the electrical insulation performance is not affected by the temperature.