Slow blood coagulation may be due to factors such as lack of nutrition, blood viscosity, and medication, and specific situations require relevant testing to determine.

1. Lack of nutrition: Slow blood clotting may be caused by a lack of vitamin K in the body, and it is necessary to supplement with vitamin K.

2. Blood viscosity: It may also be caused by excessive blood viscosity, and adjusting diet can help alleviate the disease.

3. Drug factors; If anticoagulants are taken, such as aspirin enteric coated tablets or clopidogrel bisulfate tablets, they can also cause aggregation, leading to rapid slowing of blood flow.

In addition to the above reasons, there may also be issues with platelets, which require relevant testing and treatment.