Eating and biting into the flesh inside the mouth, the specific methods are as follows: First, if there is no obvious rupture and blisters, most of the cases do not need special treatment, and can recover by themselves. If it has caused traumatic ulcers, you can apply watermelon cream spray, tretinoin oral ointment on the ulcer surface, or use such medications as rehabilitation of new liquid gargle, in order to promote the healing of the ulcer surface and relieve pain. Secondly, if blisters or blood blisters appear in the mouth due to occlusal trauma, the blisters and blood blisters are small in size and do not need special treatment, they can be absorbed by themselves. If the area of blisters or blood blisters is relatively large, self-absorption is very difficult, in this case, remember not to pick the blisters or blood blisters, which is very easy to cause secondary infection, you should go to the hospital, in the doctor strictly disinfection under the picking of the blood blisters or blisters, to discharge the pus and blood.