Cyperus rotundus is a traditional Chinese medicine and is non-toxic. However, it should be used with caution by people with cold spleen and stomach (weak and cold spleen and stomach). Shishangbai, also known as Da Ye Cai and Sao Luo Cao, etc., has a sweet, slightly bitter, astringent flavor and is cool in nature. It belongs to the lung, stomach and liver meridians. It has the efficacy of clearing heat and removing toxins (removing heat and toxins from the body), dispelling wind and removing dampness (dispelling wind and dampness from the body), and is mainly used in the treatment of sore throat, swelling and pain in the red eyes, coughing due to lung heat, mastitis, jaundice due to dampness-heat, paralytic pain due to wind-dampness, and bleeding due to trauma. Although it can be used to treat a variety of diseases, it must be used on the basis of traditional Chinese medicine diagnosis. Moreover, there are some differences in the way of administering the drug for different diseases, so it is important to strictly follow the doctor’s instructions and use the correct usage of Phellodendron Bark in order to make the drug give full play to its due efficacy.