Externally used medicinal preparation for detumescence and analgesia and preparation method thereof

The invention discloses an externally used medicinal preparation for detumescence and analgesia and a preparation method thereof. The externally used medicinal preparation is prepared from giant knotweed rhizome, gypsum ustum, borneol, ground sesameseed oil and hard paraffin. Compared with the prior art, the medicinal preparation is safe and effective and has stable properties, a simple preparation process and low-price and readily-available basic remedy raw materials. Years of clinical verification show that the medicinal preparation does not have adverse reaction and toxic and side effects, and when the medicinal preparation is used for treating parotitis through external application, the total clinical effective rate for treating the parotitis reaches 89.6 percent.