The solution to plant trees to reduce noise is very effective and economical. In addition to reducing noise, trees also have many effects in environmental protection such as climate change, dust extraction and toxic gas ... Green trees grow in bands with better noise protection than growing into a continuous band. The results show that noise reduction through the green strip is most effective in the first 10 to 15 meters of the strip. Therefore, the width of each strip of trees should not be less than 5 m.