Abstract: If Sun Zhihai have ever studied metaethics he cannot question conception of "the property of behavior fact". Because the fundamental problem of metaethics is whether "ought to" and "value" can be deduced from"be"and"fact". obviously,These contain the conception of"behavior ought"and"behavior fact"and the conception of"the property of behavior ought"and"the property of behavior fact".

Key words: the fundamental problem of metaethics, the property of behavior ought, the property of behavior fact

摘要： 孙志海如果研究过元伦理学,恐怕就不会质疑“行为事实属性”概念。因为元伦理学的根本问题——“应该”、“价值”能否从“是”、“事实”推导出来——显然蕴含着“行为应该如何”与“行为事实如何”概念,蕴含着“行为应该”与“行为事实”概念,蕴含着“行为应该属性”与“行为事实属性”概念。

关键词: 元伦理学根本问题, 行为的应该属性, 行为的事实属性