From the perspective of traditional Chinese medicine, castor root has the effect of dispelling wind and spasm, inducing diuresis and swelling, promoting blood circulation and relieving pain, and can be used to treat a variety of diseases. The most common diseases include rheumatic diseases, including rheumatoid arthritis, rheumatoid arthritis, ankylosing spondylitis and so on, these diseases are often manifested as joints red, swollen, painful, some patients manifested joint stiffness; in addition to the treatment of neurological and musculo-neurological pathologies resulting in limb rigidity flexion and extension of unfavorable, the most common diseases include epileptic seizures and petit mal seizures in remission can be treated with castor root; can also be used to treat cerebrovascular disease in the late stages of the treatment. The most common diseases include epileptic seizures and petit mal seizures, in the remission period can be treated with castor root; can also treat the late sequelae of cerebrovascular disease left by the limb flexion and extension of unfavorable limbs, limb stiffness; castor root itself also has a very good diuretic effect, for a variety of causes of edema in the body have a certain therapeutic effect, such as nephritis, nephropathy of the lower limbs edema, liver function abnormalities, or cirrhosis of the liver resulting in ascites or generalized edema, have a certain therapeutic effect; In addition, the castor root itself because it has a very good effect. Castor root because of its own good blood stasis effect, but also can treat women’s menstrual disorders, such as amenorrhea, menstrual cycle prolongation, or low menstrual flow, have a good therapeutic effect; in addition to external castor root can also be used for bruises resulting in localized redness, swelling and pain. The above is the efficacy and role of castor root.