Plasminogen activity 58 consider the presence of liver function impairment is more serious. 1. The normal value of prothrombin time is 12~14 seconds, and its normal activity is 75%~100%. Prothrombin activity is lower than 75%, for liver function is impaired, when liver disease, especially viral hepatitis caused by liver disease, resulting in liver cell damage, liver function decline, this will affect the liver’s coagulation function, resulting in low prothrombin activity. Bleeding phenomenon such as bleeding gums, nosebleed, skin ecchymosis, etc. may occur, and in severe cases, gastrointestinal bleeding may also occur. 2. Because of the mild decrease in thromboplastin activity does not exclude individual differences or the sensitivity of the machine, for the cause of the comprehensive consideration, effective treatment, at the same time, pay attention to the strict prohibition of alcohol, replenish the adequate amount of vitamins. It is recommended to combine their own symptoms, go to the hospital for further examination, through the liver function, hepatitis B five and liver ultrasound and other tests to clarify the specific lesions, should consult a doctor in time, follow the doctor’s instructions.