The invention relates to a full automatic printing gob feeder which comprises a rack, a powder tank rotating device, two powder feeding devices, two sample cup rotating devices, two metering devices, two auxiliary feeding devices and an electrical control device, wherein the upper part of the rack is provided with the powder tank rotating device, the lower part of the rack is correspondingly provided with the two sample cup rotating devices side by side, and a powder tank of the powder tank rotating device corresponds to right above sample cups of the sample cup rotating devices; and one powder feeding device is arranged right above the powder tank, the metering device is fixedly arranged right below the corresponding sample cup of each powder feeding device, and the metering device is matched with a sample cup support. The full automatic printing gob feeder provided by the invention has the advantages that the structure is simple, the design is scientific and reasonable, the colour combination is accurate, the precision is high, the printing proofing efficiency is effectively improved, the full automatic printing gob feeder is safe and reliable, the cost is low, the proofing repeatability is good, a powder dyestuff is avoided polluting an work environment, the hand labor intensity is reduced, and the full automatic printing gob feeder is convenient and practical.