Method for preparing rehmannia glutinosa charcoal

The invention discloses a method for preparing rehmannia glutinosa charcoal. The method comprises the following steps: a cleaning and infiltration step: cleaning the rehmannia glutinosa root and thenplacing the material in water infiltrating; a slicing step: slicing the infiltrated raw rehmannia root; a drying step: drying the slice; and a frying step: performing stir frying on the dried slice atthe temperature of 380 to 400 DEG C for 16 to 20 minutes to obtain the rehmannia glutinosa charcoal. The preparation method has high stability, simple operation and strong practicability, and can stably produce good quality rehmannia glutinosa charcoal, so that the product yield is high. 本发明公开了一种地黄炭的制备方法，包括：清洗浸润步骤：将生地黄清洗干净，然后置于水中浸润；切片步骤：将经浸润处理的生地黄进行切片；干燥步骤：将切片进行干燥；炒制步骤：将经干燥的切片在温度为380-400℃，时间16-20min的条件下进行炒制，得到地黄炭；该制备方法稳定性高，操作简便，实用性强，能稳定生产出质量好的地黄炭，使得产品良率高。