门捷列夫的周期律同它发现的历史是人类思想最伟大的综合,它指明了在认识自然中辩证法的优越性,它明显地介绍了辩证的基本规律。周期律的哲学内容是极其明显的,关于物质的一致性、发展、以及由量到质的转变。所有这些都是学生唯物辩证的世界观教育。周期律的发现是发现自然科学中最重要的规律——一化学元素周期律——的一个正确泉 Mendeleev’s cycle law and its discovery history are the greatest synthesis of human thought. It points out the superiority of dialectics in the understanding of nature. It clearly introduces the basic laws of dialectic. The philosophical content of the law of the cycle is extremely obvious, with regard to the consistency, development, and quantity-to-quality transformation of matter. All of these are student materialist dialectical worldview education. The discovery of the periodic law is a correct spring for discovering the most important law in the natural sciences—a periodic law of chemical elements.