The following are the contraindications of Radix et Rhizoma: 1) Pregnant women should not take it. 2) It should be decocted for a long time to reduce toxicity and not for less than 30 minutes. 3) It should not be applied together with Rhizoma, Radix et Rhizoma, Psidium, Psidium, and Bletilla. 4) Patients with symptoms of high fever and excessive yang energy should not apply Radix et Rhizoma to avoid aggravating the condition by helping yang to generate fire. In clinical practice, Radix Aconiti is a very useful herbal medicine that can strengthen the heart, analgesia, anti-inflammatory, improve the function of human organs, and is very effective in treating patients with heart failure, peripheral weakness and kidney failure.