The invention discloses an automobile illuminating lamp which comprises an LED module. The LED module comprises a flip blue light LED chip, an aluminum substrate and multiple optical fibers. The flipblue light LED chip is arranged on the aluminum substrate, the aluminum substrate is provided with a plurality of silver wires, the flip blue light LED chip is fixed to the silver wires of the aluminum substrate through tin paste, the space between every two adjacent silver wires of the aluminum substrate is filled with heat conduction insulation glue, a radiator is arranged below the aluminum substrate, the longitudinal section of the tin paste is in a big-end-down trapezoid shape, the width of the top face of the tin paste is equal to the width of a pin of the flip blue light LED chip, a uniform temperature plate is arranged below the aluminum substrate, radiating fins are arranged below the uniform temperature plate, an inlet in one end of the optical fibers right opposite to the flip blue light LED chip is fixed to the aluminum substrate, accordingly, blue light emitted by the flip blue light LED chip is completely coupled to an optical fiber circuit to be conducted to the other end of the optical fibers, the other end of the optical fibers is coated with epoxy resin containing fluorescent powder, and blue light conducted from the optical fibers penetrates through the cured epoxy resin to motivate the fluorescent powder inside so as to emit white light.