A manufacturing method for pure chicken essence powder includes Step A: providing chicken essence solution； Step B: reducing pressure to concentrate the chicken essence solution into concentrated solution； and, Step C: utilizing a roller unit to heat the concentrated solution and drying the concentrated solution into pure chicken essence powder. The two-step processing of reducing pressure for concentration and drying using roller unit adopted in this invention may achieve excellent drying effect similar to freeze-drying without using compressor consuming energy or adding excipient, so as to achieve the advantages of lower manufacturing cost and higher purity.一種純雞精粉之製法，包含步驟A：提供雞精液。步驟B：將該雞精液減壓濃縮成濃縮液。步驟C：利用一滾輪單元加熱該濃縮液，並將該濃縮液乾燥成純雞精粉。本發明所採取的減壓濃縮搭配該滾輪單元乾燥的二段處理方式，能取得類似冷凍乾燥的良好乾燥效果，無須使用耗能的壓縮機，也不用添加賦形劑，具有較低的生產成本與較高的純度之優點。
