According to the public health network, Yunnan Baiyao aerosol also has a safety device. A set of Yunnan Baiyao aerosol contains two bottles, one red and one white. The red one is called safety liquid, which is the liquefied safety device of Yunnan Baiyao safety device. In case of emergency, you can use the safety device first, then use the spray of Yunnan Baiyao, or use other dosage forms of Yunnan Baiyao after the safety device. The two complement each other, and can better play the role of promoting blood circulation and removing blood stasis, reducing swelling and removing blood stasis.