矢量势当初是为建立理论体系时形式地引进的,以后在较高层次的物理图象中获得了更为明确的含义,但是的引入决不仅仅是为了理论上的需要,应该具有实际的应用价值。为了深入浅出地论述矢量势的物理含义,本文采用了类比的方法,较为简洁地计算出结果。在寻求相关事物之间的内在联系过程中,展现了的内涵,通俗地表达了矢势的意义,并使其在普通物理教学范畴内获得了应用。 Vector momentum was formally introduced for the establishment of a theoretical system, and later gained a more definite meaning in the higher-level physical images. However, the introduction of  must not be merely a theoretical one but should be practical The application value. In order to lay a solid foundation to discuss the physical meaning of vector potential, this paper adopts the analogy method, and calculates the result relatively succinctly. In the process of seeking the internal connection between the related things, it shows the connotation of  and expresses the meaning of the vernacular 通 and makes it applied in the field of general physics teaching.