Earth day is under the background of environmental pollution is increasingly serious. The world earth day originated in the United States. On April 22, 1970, the United States for the first time held a huge "earth day" activities, on this day, in the United States has more than 2000, ten thousand people, 10000 primary and secondary schools, 2000 universities and 2000 communities and groups took part in this activity. People held a rally, parade, preaching and other various forms of propaganda activities, called on everyone to act, to protect and save the planet. This is the first time in human history of large scale mass environmental movement. This activity was a stunning success, a year after the "earth day" are in focus. This is the first time in human history of large-scale mass environmental movement.

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As the beginning of modern environmental movement, "earth day" activities to promote the establishment of a number of national environmental laws and regulations. On April 22, 1990, more than 140 countries around the world, more than 200 million people across the country at the same time held a variety of environmental protection campaign. This activity obtained the UN approval. From now on "earth day" has become "the world earth day"

地球日是在环境污染日益严重的背景下产生的。世界地球日活动起源于美国。1970年4月22日，美国首次举行了声势浩大的“地球日”活动，这一天，全美有2000多万人，10000所中小学，2000所高等院校和2000个社区及各大团体参加了这次活动。人们通过举行集会、游行、宣讲和其他多种形式的宣传活动，呼吁所有人都行动起来，保护和拯救我们的地球。这是人类历史上第一次规模宏大的群众性环境保护运动。这次活动取得了极大成功，以后每年的“地球日”也都备受关注。这是人类有史以来第一次规模宏大的群众性环境保护运动。

作为人类现代环保运动的开端，“地球日”活动推动了多个国家环境法规的建立。1990年4月22日，全世界140多个国家、2亿多人同时在各地举行多种多样的环境保护宣传活动。这项活动得到了联合国的首肯。从此“地球日”成为“世界地球日”