“本体论承诺”是蒯因的本体论思想:存在就是成为变项的值。这一思想不仅在哲学,尤其在科学哲学上产生了重大的影响,而且在科学上同样有着重要的意义。本文在简略分析了本体论承诺的思想内涵之后,从多方面探讨了这一思想在科学上的意义。我们并不打算全面、系统地考察蒯因的科学思想和基本观念,而只是从本体论承诺的角度考察这一理论在科学上的意义。 “Ontological commitment ” is the ontological idea of ​​Qiu: existence is the value of becoming a variable. This idea not only has a significant impact on philosophy, especially on philosophy of science, but also has a great scientific significance. After a brief analysis of the ideological connotation of ontological commitment, this article explores the scientific significance of this idea in many aspects. We do not intend to conduct a comprehensive and systematic examination of his scientific ideas and basic concepts, but to examine the scientific significance of this theory from the perspective of ontological promises.