The invention relates to a Serverless-based front-end application construction method and a Serverless-based front-end application construction system, which can realize dynamic iterative updating ofa front-end application. According to the invention, the concept of Serverless is extended to the front end; running time of a front-end application and definition of a front-end UI are separated, a front-end UI component is defined in the form of a function package composed of stateless functions and provided in the form of remote service, a front-end container application service and a rear-endfunction package service are formed, and a component code is provided in the form of service and dynamically loaded at the front end. In the development process, developers develop components in parallel and add codes to a function package service through a management interface to achieve deployment, so that a transversely-extensible, dynamic, fine-grained and continuous iterative development process is formed, and the technical threshold and potential risks of iterative upgrading of a front-end system are reduced.