The invention discloses a metal halide lamp with a ceramic discharge tube, which comprises the ceramic discharge tube, wherein a discharge cavity capable of holding inert gas and ionizable salt is arranged in the discharge tube, and the discharge cavity is a hermetic space formed by a ceramic wall. The lamp is characterized in that the ceramic wall comprises a middle protuberant part, long thin capillary tubes at two ends, as well as bowl bottoms transitional from the protuberant part to the capillary tubes; the bowl bottoms are non-transparent bowl bottoms; and the transmittance of the bowl bottoms to visible light and infrared radiation is lower than that of the middle protuberant part. The ceramic bowl bottoms at two ends of the discharge cavity can not transmit light and even reflectsinfrared radiation, and the ceramic wall has a certain function of preserving heat, so as to raise the cold point temperature of the discharge cavity, allow the temperature distribution of the discharge cavity to be more uniform and provide higher metal halide vapor pressure at the same hot point temperature, and further improve efficiency or color rendering property to improve color consistency.