Marshmallow extract , Malvaceae, perennial herbs, about 1 m tall; Stem erect, densely stellate long strigose; Flowering period from June to August, fruit period from August to September; Born near fields, roadsides and wilderness areas;Hollyhock seeds contain crude protein, fatty oil, amino acids. Rich in essential unsaturated fatty acids. There are 18 kinds of amino acids, and the content of glutamic acid is the highest among non-essential amino acids. In addition, it contains a variety of mineral elements, as well as a variety of trace elements needed by the human body. The roots contain polysaccharides and tannins, Root medicine has the function of relieving surface and dispelling cold, diuresis, cough, anti-inflammatory and detoxification. Cure boils and swelling, cough, bronchitis and cold cold