After tooth extraction spit out cotton balls full of blood need to be based on the nature of the bleeding to take different treatments, generally minor bleeding can bite the cotton roll to stop bleeding, if the bleeding is large and fast, consider the need for stitches to stop bleeding. 1. Slight blood seepage: clinically, after tooth extraction, generally need to bite the cotton roll for about 30 to 40 minutes for compression hemostasis, spit out the cotton ball, due to the expansion of the wound capillaries, the blood clot is not completely mechanized, the wound may appear slight, a small amount of blood seepage, the blood mixed with saliva resulting in a mouth full of blood, you can take the first sterile cotton ball and again compression for about 30 minutes to stop the bleeding. 2. Bleeding and fast: If you spit out the cotton ball after tooth extraction and found that the wound appears active bleeding, and bleeding, fast, considering the possibility of excessive trauma or extraction process there is a phenomenon such as gum tear caused by the need to go to the hospital stomatology department for a follow-up examination, the best re-anesthesia on the extraction wound suturing to stop bleeding. 3. Special circumstances: the patient’s personal physical abnormalities may also lead to the phenomenon of extraction wounds bleeding, such as the presence of hypertension, coagulation disorders, bleeding disorders and other special conditions, may lead to extraction wounds bleeding abnormally, the need for the application of Yunnan Baiyao under the guidance of the doctor, epinephrine and other drugs to stop bleeding. It is recommended to consult a doctor in time when abnormal situation occurs, and carry out treatment under the doctor’s guidance.