Air pollution is an urgent environmental issue needed to be solved. Its emissions of vehicles and PM 2.5 cause acid rain and pollution. Barriers are the highest interface contacting traffic flow. Moss can grow on the roadside in emissions, also can absorb vehicle emissions as nutrient. Thus, we hope to improve pollution problems through the combination of these. Our design is environmentally friendly blocking acid rain that they are using moss from the worldwide to cover it, the plant is widely used to efficiently prevent air pollution, and block acid rain. Moss survives by absorbing air and water, using its characteristics to absorb and filter the emission and particulate matter by the vehicle, transform it into nutrients for growth, and integrate it with the acoustic barrier as a new interface to solve the problem.