1972年6月5日在瑞典首都斯德哥尔摩召开了《联合国人类环境会议》，会议通过了《人类环境宣言》，并提出将每年的6月5日定为“世界环境日”。同年10月，第27届联合国大会通过决议接受了该建议。世界环境日的确立，反映了世界各国人民对环境问题的认识和态度，表达了我们人类对美好环境的向往和追求。

     On June 5, 1972, Stockholm, the capital of Sweden, held a "United Nations Conference on the Human Environment", the meeting adopted the "Declaration on the Human Environment," and every year on June 5 as the "World Environment Day." In October the same year, the 27th United Nations General Assembly adopted a resolution to accept the proposal. The establishment of the World Environment Day, reflects the peoples of the world's awareness of environmental issues and attitudes, and expresses our human desire and pursuit of a better environment.