The foot sprain without swelling means that the sprain is not particularly serious, in addition to indicating that the sprain is very short, the specific treatment should have the following aspects: 1, immediate ice, can quickly relieve pain as well as reduce swelling, even if the swelling is getting more and more serious later, through the treatment of ice can be a great reversal part. 2, must be careful not to walk on the ground, although there is no swelling at this time, still walking on the ground will make the swelling increase quickly within a short period of time. The pain and swelling may increase on the second or third day, so you can use topical aerosol of Yunnan Baiyao for more than 48 hours to activate the blood, remove stasis and relieve pain.