The invention discloses a double-screen-stacked combined colored total-liquid-crystal-display car instrument. The instrument comprises an instrument mask, a screen ring, a segment code screen, a colored liquid crystal screen, a light-guide mask, a PCB and a bottom shell. The double-screen-stacked combined colored total-liquid-crystal-display car instrument has the advantages that the instrument is stacked and assembled by the colored liquid crystal screen and the segment code screen, various indexes and functions of a car are displayed in a combined manner, the instrument is simple in structure, free of pointers and a transmission motor, safe and reliable in circuit and resistant to vibration, and 60% of manufacturing cost is saved as compared with a similar colored total-liquid-crystal-screen instrument; the circuit principle of the instrument is advanced, the instrument is provided with a main chip IC, a voltage-stabilizing chip WC, various protecting circuits, filter circuits and DC-DC conversion circuits, and the instrument is provided with a loudspeaker which can give out warning voices; the instrument is connected with a power supply in the car, sensor power supplies on various parts of the car, a switching switch and the circuit board can be connected through the instrument, and the switching switch can switch the display modes such as a traditional mode or a modern segment code display mode of the instrument.