Magnesium sulfate topical application can play a good role in reducing swelling. For example, we have edema around the anus hemorrhoids, you can choose magnesium sulfate external compress. Method is to prepare a concentration of about 50% of magnesium sulfate solution, the water temperature to about 36-40 degrees Celsius, you can choose a clean gauze soak, soak the gauze after a little wring, compress in the swollen position, adhere to 15-20 minutes can play a good effect on the swelling. General magnesium sulfate solution using hot water configuration, and then use dry gauze hot compress, conducive to its absorption. General magnesium sulfate external compress 2 times can be effective. Hemorrhoid edema can also use hemorrhoid cream topical after wet compress, can play a better effect.