The main difference between Radix Paeoniae Alba and Radix Paeoniae Alba is that Radix Paeoniae Alba can clear heat and cool the blood, invigorate the blood and disperse stagnation, while Radix Paeoniae Alba mainly has the effect of nourishing the blood, astringing Yin, softening the liver and relieving pain. In addition, red peony can diarrhea liver fire, while white peony mainly nourishes liver yin. Red peony disperses without tonicity, while white peony tones without diarrhea. The two herbs can also be combined to play a dispersing, astringent, diarrheal and tonic role, which is most suitable for yin deficiency with stasis and heat. In use, it is also important to note that both white peony and red peony are anti-veratrum. Modern pharmacological studies have found that Bai Shao can increase coronary flow, improve myocardial blood supply, and have a vasodilating effect. It is effective in acute myocardial ischemia, platelet aggregation, sedation, analgesia, and anti-inflammation, while Radix Paeoniae is more effective in dizziness, headache, chest pain, abdominal pain from dysentery, abdominal pain from appendicitis, and menstrual disorders.