The invention relates to an external medicinal powder for nursing local induration of vascular access for hemodialysis patients. The external medicinal powder is prepared from the following raw material medicines: 30g of rheum officinale, 10g of pseudo-ginseng, 10g of safflower, 10g of cinnamon, 15g of thunberg fritillary bulb, 5g of catechu and 3g of borneol. A preparation method of the external medicinal powder comprises the following steps: grinding the six traditional Chinese medicines into fine powder, and grinding with borneol; screening through a screen of 100-150 meshes; and uniformly mixing for later use. A using method of the external medicinal powder comprises the following steps: weighing the prepared traditional Chinese medicinal powder, adding a proper amount of 75 percent alcohol to prepare paste which cannot flow down; and uniformly applying the paste with thickness of about 2-3mm in an area 2-3cm around the punctured point after 24 hours of dialysis, coating with gauze, keeping for 4-6 hours, and applying once a day (application is stopped on the dialysis day) for 20 days continuously. The external medicinal powder is reliable in curative effect, does not have toxic or side effect, and is low in price.