The difference between fresh tian ma and dry tian ma is in the method of consumption, preparation method, scope of application, storage methods and conditions and other aspects. Different methods of consumption: fresh tian ma’s method of consumption to stew, cooking and frying; dry tian ma is a medicinal herb to decoction-based, but also can be stewed when adding a small amount of soup. Different concoctions: dried tian ma is fresh tian ma washed, steamed and dried. Scope of application: Dried Tianma has the effect of restraining wind and stopping spasm, calming liver yang, dispelling wind and clearing the channels (eliminating wind, dredging the meridians and collaterals), and is suitable for the treatment of internal movement of liver wind, convulsions of eclampsia, dizziness, headache, numbness of the limbs, hand and foot paralysis, rheumatic paralysis and other diseases. Fresh tianmao effect is similar to dry tianmao, but due to storage conditions and other factors, generally will not be used in medicine. Storage conditions are different: fresh Tianma need to be sealed and refrigerated storage, dry Tianma need to be closed, dry environment. Adverse effects of Tianma is not clear, the treatment of disease need to be used under the guidance of a doctor to identify the evidence, not to be taken on their own.