The invention relates to external Chinese medicine for curing ascites due to cirrhosis and a method for preparing the same. The medicine mainly comprises euphorbia kansui, rhubarb, fructus gleditsiae offieinalis, Pharbitis (Black), Pharbitis (White), India pokeberry, grifola and so on. The preparation method is as follows: powder of the medicine is mixed, immersed, boiled and filtered; the filtrate is concentrated into the shape of magma; borneol after grinding is added into the filtrate, uniformly stirred and concentrated into the shape of thick paste, and then the external Chinese medicine is formed. Under the condition of treatment, the external medicine is applied to acupuncture points of patients for local treatment by matching with taking oral medicine, and the absorption effect of the skin can be increased by auxiliary utilization of other heating devices, irradiating devices and so on. Particularly, the external Chinese medicine is introduced into the acupuncture points by utilization of a Chinese medicine ion-introduction machine so as to give full play through a channel system and play a part in promoting urination and defecation by making the medicine potency pass through the skin and reach the viscera, thereby the external Chinese medicine can effectively cure the ascites due to cirrhosis.