在简述波普尔的“三个世界”理论的基础上,指出他的世界3概念界定的模糊性,概述了各种世界4观点以及在世界4问题上的争论,最后提出解决世界4问题的途径。应当对波普尔的“三个世界”理论进行修正,把世界3界定为人类活动的产物(文化世界或属人世界),而不仅仅是认识活动的产物(知识世界)。这样,波普尔“三个世界”的划分在逻辑上就是充分的和无懈可击的,目前的各种世界4概念都可以纳入新的世界3范畴之中,是隶属于世界3的亚世界。 On the basis of Popper’s theory of “Three Worlds”, he pointed out the ambiguity of defining the concept of his world, outlined the views of various worlds and the controversies on the four issues of the world, and finally put forward the solution to the four questions of the world way. Popper’s theory of “three worlds” should be amended to define world 3 as the product of human activity (the cultural world or the human world), not just the product of the activity (knowledge world). In this way, the division of Popper’s “three worlds” is logically sufficient and impeccable. The current concepts of various kinds of worlds 4 can be incorporated into the new world 3 category and belong to the sub-world of world 3.