The invention discloses a JSON-oriented webpage modular design and asynchronous loading method. According to the method, an HTML webpage layout and webpage elements are packaged into different JSON objects, the JSON objects are relatively independent, definitions can be nested, and therefore modular design and dynamic modification of a webpage can be conveniently realized; and by use of the JSON objects to express the HTML webpage layout and the webpage elements, data redundancy can be further lowered, and network transmission and response speed of webpage codes can be increased. The method is suitable for Web software design and has important application value in the software development field.