Yunnan Baiyao should refer to Yunnan Baiyao capsules, natto belongs to fermented food, according to the instructions for use of drugs, there is no contraindication between the two, so they can be taken together. 1. Yunnan Baiyao capsule has the effect of removing blood stasis and stopping bleeding, activating blood circulation and relieving pain, detoxifying and eliminating swelling, which can be used for the treatment of bruises, blood stasis and pain, vomiting blood, hemoptysis, hemorrhoidal blood, hemorrhoidal leakage (excessive menstruation or dripping more than one drop), surgical hemorrhage, ulcers and swelling and soft tissue contusion, closed fractures, bronchodilatation, and hemoptysis of tuberculosis and other diseases. In the use of the drug should be noted that after taking the drug may cause chest tightness, panic, abdominal pain and other adverse reactions, for pregnant women should not be used. In addition, within one day of taking the medicine, avoid eating fava beans, fish and cold and sour food. 2. Natto belongs to food, is a kind of fermented food with soybean as raw material, does not have the efficacy of treating diseases. In summary, according to the instructions for use, there is no contraindication to the use of the two, so they can be used together. If necessary, it is recommended to go to a regular hospital, under the guidance of a professional physician to identify the treatment.