A metal halide lamp control device with linear control power transducer, having application in an automobile lamp provided with metal halide lamp illumination. A linear control power transducer is utilized to replace a traditional digital control power transducer. The control device includes at least an integrated circuit of the power transducer, wherein the integrated circuit embodies a plurality of control devices and a power supply unit; a starting circuit and the integrated circuit serially acquire power supply to actuate the metal halide lamp; a power regulating circuit which maintains a stable power feedback; and a temperature detector unit which protects against temperature exceeding a specified temperature.