If the blood blisters in the mouth are formed because of biting into the mucous membrane, this can be picked because it is sterile and can be dried and absorbed relatively quickly after picking. However, after picking, you should keep your mouth clean and hygienic to avoid secondary bacterial infections. If there is no reason for the appearance of blood blisters, you need to go to the hospital to further clarify the cause, blindly picking will affect the doctor’s diagnosis of the disease. If the blood bubble in the mouth is formed by accidentally biting the oral mucosa when eating, it is sterile, you can pick it up, you can use a syringe needle or use a general sewing needle after sterilization, in the surface of the blister 3-4 small eyes, use a cotton swab to squeeze out the bloody liquid inside, after picking up the blood bubble will be able to dry and absorb relatively quickly. However, there are precautions to take after picking, because picking the inside of the mouth and the broken place can come into contact with, because there will be a lot of bacteria inside the mouth, especially after eating or drinking sweet drinks, if you do not clean the mouth in time, the bacteria inside the mouth will multiply very quickly. So after the blood bubble is broken, pay close attention to oral hygiene, for example, after eating, you must brush your teeth in the morning and evening, it is best to rinse your mouth with antiseptic mouthwash, so as to reduce the risk of secondary bacterial infection of the broken blood bubble, as long as it is well protected, this blood bubble after it is broken usually grows well in a few days. If this bubble is formed by itself, you need to go to the hospital to see if it is caused by some disease, this time it is not recommended to blindly pick it, it will affect the doctor’s judgment of the disease. Patients with blood blisters in the mouth usually pay attention to eating more fresh vegetables and fruits, such as pears and watermelons, to moisten the lungs and clear the dryness, and pay attention to supplementing the vitamin B family, which has a certain alleviating effect on the blood blisters in the mouth. Try to avoid eating hard and irritating food to avoid puncturing the local blood blisters and causing infection. It is recommended to rinse the mouth and brush the teeth with salt water frequently.