Cordyceps in water to drink once 3-9g is appropriate, the specific dose depends on the size of Cordyceps tablets, soak to drink the active ingredients are limited, such as the need for disease treatment, under the guidance of a professional physician decoction is better. Cordyceps belongs to the more valuable species of Chinese medicinal herbs, can benefit the lungs and tonic kidney, phlegm and stop bleeding. It is commonly used in coughing, lumbar and knee soreness, phlegm and blood coughing. 1. Cordyceps sinensis is often used in the treatment of asthma and chronic cough, phlegm and blood cough, this medicine is sweet and flat, is a good tonic for the kidney and lungs, can be just a single drug use, can also be used with Colla Corii Asini, raw land, maitake or Chuanbei and so on. It can also be combined with astragalus and ginseng to treat gas deficiency and asthma caused by deficiency of the lungs and kidneys. 2. Cordyceps can be used to treat weakness in the lower back and knees, as it can benefit the essence and tonify the kidneys, so it can be used to treat the deficiency of kidney yang, as well as the soreness of the lower back and knees. It is often paired with yang tonic drugs such as eucommia, epimedium, and bacopa monnieri. It should be noted that the use of traditional Chinese medicine requires the judgment of a professional physician, and it is recommended to use the drug under the guidance of a professional physician.