China Rana is full of treasures. According to modern scientific analysis, the main components of Xuege ointment are: the content of protein is as high as 5 1. 1%-52.6% (the content of protein in China Rana chensinensis oil is as high as 56%), fat is 4%, and minerals are 4.7%. It also contains 18 amino acids, frog alcohol (bile alcohol), unsaturated fatty acids (linoleic acid, linolenic acid, etc. ), nucleic acids, phospholipid compounds, various vitamins (A, B, C, D, E, etc. ) and potassium, calcium, iron, phosphorus, magnesium, manganese, selenium and other trace elements 13. China Rana chensinensis is also rich in epidermal growth factor, which can promote cell division, make skin delicate and fair, regenerate cells, and a small amount of natural hormones beneficial to human body, such as testosterone, estradiol and progesterone. It has the unique effects of tonifying kidney and essence, moistening lung and nourishing yin, strengthening yang and strengthening body.