This activity is practically meaningful and propagates widely to the whole society to raise awareness of environmental protection by specific tasks such as planting trees to create greenery spaces, greening vacant lands, not throwing garbage indiscriminately, using resources economically and avoiding wasting water that is becoming exhausted. At the same time, it aims to raise consciousness of significance and importance of building and keeping the environment green clean and beautiful, expressing voluntary spirit of Dak Lak Museum’s officials and employees in protecting the surrounding environment. World Environment Day is the biggest annual event about environmental protection. The theme of this year is "Beat plastic pollution" which aims to propagate and mobilize people to change their daily life habits to reduce the plastic waste pollution burden to our natural environment and our health. It is an opportunity for each of us, in ways, combat plastic pollution in the worldwide to protect human health and environment, anti-climate change increasingly complicated as today.