Application of iodine in preparation of medicine for preventing and treating respiratory tract infectious diseases and method for preparing iodine-containing aerosol with low particle size

The invention discloses an application of iodine in preparation of a medicine for preventing and treating respiratory tract infectious diseases and a method for preparing iodine-containing aerosol with low particle size. According to the invention, iodine is dissolved in pure water and an oily solvent to respectively prepare two iodine solution atomizing agents, and the two iodine solution atomizing agents are atomized into iodine-containing aerosol by an atomizer to be inhaled into the respiratory tract, so that pathogens are quickly and efficiently killed, and the iodine-containing aerosol becomes the only specific medicine for treating respiratory virus infection lacking effective treatment medicines; and more effective and convenient treatment medicines are provided for infection of respiratory bacteria, mycoplasmas, fungi and the like. The method is mainly characterized in that iodine is prepared into a low-concentration iodine solution and atomized into iodine-containing aerosol, so that the density of