Magnesium sulfate cold compress can reduce swelling, this is a variety of effects of drugs, in the swelling can also play a very good effect, in the specific treatment can be carried out the following steps: First, adjust the concentration, for the commonly used alcohol in the use of the concentration of the drug needs to be adjusted before, to prevent the concentration is too high caused by the patient discomfort, the specific concentration is generally in about 50%, according to the patient’s condition, can be based on The patient’s advice for treatment; Second, ice, the patient can be diluted magnesium sulfate for ice, after a period of time, the patient’s local swollen area will often be significantly relieved, at the same time, it should be noted that this way of ice is not once effective, the patient should be kept in the frequency of twice a day, adhere to a few days before the effect. It is important to note that this treatment is particularly suitable for swelling due to isolation, and often has a better effect on localized swelling. For patients with generalized enlargement and other conditions, they should go to the hospital promptly.