PurposeThe Corona Virus Disease 2019 (COVID-19) pandemic has become a challenge of world. The latest research has proved that Xuanfei Baidu granule (XFBD) significantly improved patient’s clinical symptoms. the compound drug improves immunity by increasing the number of white blood cells and lymphocytes. and exerts anti-inflammatory effects. https://fitnessgravesyardes.shop/product-category/mcb/