Bitter, pungent and slightly warm, Zelen is classified as a member of the liver and spleen meridians. It is effective in invigorating blood to regulate menstruation, dispersing blood stasis and eliminating carbuncles, and promoting water retention and swelling, and can treat amenorrhea caused by blood stasis, as well as postpartum blood stasis and abdominal pain. This product is pungent, warm, and generalizing, and is good at activating blood circulation and regulating menstruation, and is an important drug in gynecology for stasis of blood in menstruation. If blood stasis leads to irregular menstruation, amenorrhea, dysmenorrhea, postpartum stasis of blood and abdominal pain, Zelen can be combined with Angelica sinensis, Salvia miltiorrhiza and Yimouzuo. This product can treat bruises and injuries, bruises and swelling pain. Zeilan has the function of activating blood circulation, resolving blood stasis and reducing swelling, and it can be used alone to pound or in combination with angelica, safflower and peach kernel in the treatment of bruises and injuries. Zelen can both invigorate blood and promote water retention to reduce swelling. For stasis of blood, water-blood interconnection and postpartum swelling, it can be combined with Atractylodes macrocephala and Plantago lanceolata.