Wounds in a bleeding state generally can not be directly sprayed Yunnan Baiyao aerosol, you can use the drug after the lesions have healed. Yunnan Baiyao Aerosol is a proprietary Chinese medicine preparation composed of Panax ginseng and Chonglou, etc. It has the efficacy of activating blood circulation and dissipating blood stasis (promoting blood circulation and eliminating blood stasis in the body), and subduing swelling and relieving pain (eliminating swelling and pain). This drug is used for bruises caused by blood stasis and obstruction, such as red and purple spots, pain like pins and needles, redness, swelling and stuffiness, not daring to touch and limitation of activities, and paralysis caused by wind-dampness and stagnation of meridians and collaterals, such as pain that does not move or pain that is heavy, numbness of limbs, and constriction of tendons and bones (spasm and convulsion due to the feeling of wind and cold). The adverse effects of the drug are not clear, limited to external use only, do not spray into the mouth, eyes, nose. Do not use if the skin is damaged, stop using if the skin is allergic, pregnant women are prohibited. If you need to use the drug, it is recommended to use it under the guidance of a professional physician, not blindly self-medication.