Abstract: The infestation of biological pollution in the late 20th century has formed a major aspect of ecological disaster,seriously threatened the sustainable development of relevant nations and caused great concern from the academic circles.However,no agreement could be reached on the cause of this infestation.Regarding that modern biological pollution does not occur under pure natural circumstances,but occur under the double backgrounds of nature and humane,it is impossible to find out the true cause of it if we neglect the modern humane circumstances of the coexistence of multi-cultures.Two concepts of biological restriction and cultural restriction are introduced in this paper to analyze the social factors for the infestation of biological pollution.It is pointed out that the modern ways of human existence have helped to make the situation worse,and that we should be established in the cultures of different nations and change the resource utilization to prevent biological pollution effectively.

Key words: biological pollution, biological restriction, cultural restriction