The invention belongs to the field of dust removal and particularly relates to an efficient-treatment dust removal system which comprises the following raw materials: algae iodate dust removal agent, an inorganic iodine compound and an additive; and a preparation method of the efficient-treatment dust removal system comprises the following steps: proportionally dissolving the algae iodate dust removal agent and the inorganic iodine compound in an appropriate amount of pure water in a reaction kettle; adding the additive; controlling a certain pressure, temperature and time to carry out the reaction; drying and dehydrating; and grinding and sieving to obtain a light yellow powdery organic active iodine agent with iodine content up to 35-40% and high thermal stability. The novel organic active iodine agent is highly water-soluble, has remarkably strong thermal stability and can be added into food or table salt as an iodine supplementing agent.