Ginger and gastrodia elata decoction pieces and preparation method thereof

The invention relates to the technical field of traditional Chinese medicines, in particular to ginger and gastrodia elata decoction pieces and a preparation method thereof. The preparation method comprises the following steps: carrying out color protection treatment on fresh gastrodia elata slices to obtain wet gastrodia elata slices with the water content of 20-40wt%; performing first variable temperature and pressure difference puffing treatment on the wet gastrodia elata slices to obtain puffed gastrodia elata; mixing the ginger juice and the yeast powder leachate to obtain a mixed solution; and allowing the puffed gastrodia elata to absorb the mixed liquid, and carrying out second variable temperature and pressure difference puffing treatment. Through the method, the defect that the ginger juice is difficult to permeate into the gastrodia elata when the gastrodia elata is covered and moistened by traditional liquid such as the ginger juice is overcome, and the defects that the gastrodia elata is likely t