Preparation process and application of polygonatum cyrtonema extract

The invention relates to the field of traditional Chinese medicine extracts, and discloses a preparation process and application of a polygonatum cyrtonema extract, and the preparation of the polygonatum cyrtonema extract comprises the following steps: step 1, preparation of a polygonatum cyrtonema processed product: slicing polygonatum cyrtonema, and repeatedly steaming and baking; step 2, preparation of a polygonatum cyrtonema processed product extract: extracting the polygonatum cyrtonema processed product by using ethanol as a solvent, concentrating an extracting solution under reduced pressure, adding water for suspending, extracting by using petroleum ether, ethyl acetate and water-saturated n-butyl alcohol in sequence, filtering, and drying to obtain the polygonatum cyrtonema processed product extract. Merging, extracting and concentrating under reduced pressure to obtain a 70% ethanol extract, a petroleum ether extraction part, an ethyl acetate extraction part, an n-butyl alcohol extraction part and a