中文摘要：

首先选取国际上极具代表性的，如联合国教科文组织、英国、美国、俄罗斯、德国、日本、韩国、中国等设置的国家标准学科分类体系，通过对照表直观展示了所含的自然科学学科分类体系结构的差异。其次选取国内外所使用的几个重要的，如ISI科学网、中国知网、百科全书、维基百科、百度百科、爱思唯尔等实用信息资源学科分类体系，对其中的自然科学学科体系做了详细的探讨。在国家标准和实用信息资源学科分类体系中自然科学学科类别比较分析的基础上，从宏观层面上揭示了自然科学的总体结构，并由此透视出现今自然科学学科发展的态势。

英文摘要：

Based on the current several most representative national standard classifications of discipline at home and abroad, such as ISCED,MSSTA,JACS,CIP etc.,and several important classifications of discipline in information resources, such as ISI,CNKI,EB,Elsevier etc.,we compare the classification systems of natural science discipline by tables. After a careful study of the existing differences in both national standard classifications and information resources of natural science discipline, we try to grasp the whole structure and the new trends of natural science discipline. We can see that in classification systems of discipline, such as biology, psychology, mathematics and computer disciplines will be main subject categories and should be adjusted timely. The contents and ststus of materials science and earth science etc in natural science will be further defined.