Blood failure to coagulate may be related to thrombocytopenia, coagulation factor deficiency, drug effects, vascular abnormalities, and certain diseases. If you experience abnormal symptoms, please see a doctor immediately and receive treatment according to the doctor's instructions. Do not take medication on your own.

1. Thrombocytopenia: such as aplastic anemia, thrombocytopenic purpura, etc., insufficient platelet count affects coagulation.

2. Coagulation factor deficiency: such as hemophilia, is caused by hereditary coagulation factor deficiency.

3. Drug effects: long-term use of anticoagulants such as aspirin and heparin.

4. Vascular abnormalities: The blood vessel wall is too thin or damaged, affecting blood coagulation.

5. Disease factors: Severe liver disease can reduce the synthesis of coagulation factors, making it difficult for the blood to coagulate. If blood fails to coagulate, you should seek medical attention in time, clarify the cause, and treat it in a targeted manner. Pay attention to protection and avoid injuries at ordinary times.