The invention discloses a light guide structure of a vehicle instrument stereoscopic scale ring. The light guide structure comprises a dial plate and the scale ring arranged on the dial plate; the scale ring comprises a non-light-transmitting ring body and multiple light-transmitting scale parts arranged on the ring body; the scale parts comprise scale bodies and clamping bodies, and the clampingbodies are located below the ring body; the bottoms of the scale bodies are arc; the bottoms of the clamping parts abut against the dial plate, and light-transmitting areas are formed among the innerwalls of the clamping parts, the bottoms of the scale bodies and the upper surface of the dial plate. The light guide structure is compact and convenient to assemble, the assembly time of all parts issaved, and the quantity of LED lamps is reduced. A hooked face light-guide structure is adopted at the bottom of the integrated scale ring, perpendicular incident light is effectively guided, and a dark area after the dial plate is lightened is effectively removed, so that the scale ring has a uniform display effect.