The invention discloses automatic carbon-adding equipment of a granular carbon bleaching tower and a production process thereof. The automatic carbon-adding equipment comprises a granular carbon bleaching tower, a desugaring tank and a multi-section furnace, wherein conveying water pipes are connected among the granular carbon bleaching tower, the desugaring tank and the multi-section furnace; a quenching tank is arranged below the multi-section furnace; a blowing tank is arranged below the quenching tank; a conveying pump and a carbon conveying water pipe connected with the conveying pump are arranged inside the blowing tank; and a high tank of the granular carbon bleaching tower is connected at the other end of the carbon conveying water pipe. The automatic carbon-adding equipment has the advantages as follows: the desugaring tank can recycle liquid sugar carried by activated carbon granules, thus overcoming the disadvantage of poor bleaching effect of the regenerative activated carbon granules; in the whole process, the granules are always conveyed by a water flow, so that the intactness of the activated carbon granules is ensured and the breakage of the activated carbon granules caused by granule extrusion is avoided; by the production process, the power consumption is effectively reduced and medium water for conveying can be reused for multiple times, so that the production process has the advantages of low cost and good using effect.