The repair ability of snow pear unripe fruits is better than the commonly used ingredients for lung moisturization in the market. The efficiency of the Block 2.5 TM Snow Pear Extract is 7% better than the well-known Mangosteen and exceeds Licorice by 37%. Our research results show that Block 2.5 TM Snow Pear Extract can strengthen the abilities to remove the PM2.5 through macrophages and reduce the damage of the respiratory system caused by the accumulation of PM2.5 in our body.