The invention relates to a desulfurization ceramic pipe fitting which comprises a desulfurization ceramic pipe fitting body and a flange plate welded with the desulfurization ceramic pipe fitting together; a flange ring comprises an annular connecting part and a ring surface part and is welded on the outer side of an end surface boss of the flange plate, wherein the annular connecting part is welded with the flange plate; the outer side end of the ring surface part is connected with the annular connecting part; the internal diameter of the ring surface part is less than that of the desulfurization ceramic pipe fitting body; the ring surface part is parallel to the end surface boss of the flange plate and is a predetermined distance away from the end surface boss of the flange plate, so that an area used for filling a ceramic protection material to form an end surface ceramic protection layer at the corresponding side end of the desulfurization ceramic pipe fitting body is formed between the end surface boss of the flange plate and the ring surface part. The desulfurization ceramic pipe fitting provided by the invention has the benefit that a ceramic material layer for protecting the end surface of the pipe fitting can be formed, so that in the use process, the end surface of the pipe fitting is prevented from being worn and corroded due to no protection.