Clinical intramuscular injection injection place will often appear pain, should be from the following aspects to relieve the symptoms, first of all, you can local hot compress, through the hot water bag or warm treasure for the hot compress at the eye of the needle, can play a blood circulation, accelerate blood flow, promote the role of local absorption of drugs, will be able to relieve pain. Secondly, you can also apply magnesium sulfate topical, because magnesium sulfate topical can make the local muscle relaxation, promote the local blood circulation around, accelerate blood flow rate, so as to indirectly improve the local circulation, reduce pain. Once again, you can apply fresh potatoes at home, cut the potatoes into thin slices of about 1cm, put it on the eye of the needle, and then use gauze or tape to fix it, change it once in 24 hours, these methods can relieve the problem of pain in the injection place.