This study recently conducted various experiments using TiO2 to increase the utilization of economical TiO2 outer wall coating agents to solve fine dust, which is a major cause of air pollution. By comparing the performance of existing TiO2-containing application products, it shows how to utilize them for future use of photocatalysts. The experiment is largely divided into two stages. First, the effectiveness was verified by comparing the performance of reducing fine dust according to the mixing concentration of TiO2. Afterwards, experiments were conducted according to the number of applications, drying time, and surface materials using existing TiO2containing products.