Bacillus subtilis Spray has a bio-antagonistic effect and can be effective in preventing and treating infections of mild to moderate size II degree burns and scalds wounds. Bacillus subtilis spray contains predominant probiotics that act on the wound to form a biofilm that antagonizes the biological activity of pathogenic microorganisms. In the burn or scald wound to form a biological barrier, so as to play the role of bacterial inhibition, such as: can prevent Pseudomonas aeruginosa, Staphylococcus aureus and other germs of infection, so as to achieve the efficacy of the prevention and treatment of mild to moderate area of the II degree burns, scald wound infection. The drug must be used under the guidance of a clinician, and do not bandage after use, usually not combined with other topical drugs or respect the medical advice, allergy to drug ingredients is prohibited. Adverse reactions have not been seen. The drug should be used under medical supervision.