A creatively designed network platform constructing and applying method relates to the field of creative design of products, information retrieval and computer network service, and comprises the following steps: demand analysis software, a knowledge base system, a multi-layer research software, an online computer aided innovation software and scheme evaluation software are arranged in a server; (2) a user sends user requirements into the server on a remote networking computer and converts the user requirements into design demand data and returns the design demand data; (3) the user inputs the design demand data into the knowledge base system, the multi-layer research software or/and the online computer aided innovation software; (4) after the user solves, the server generates a first principle solution, a second principle solution or/and a third principle solution; (5) the user inquires and obtains a fourth principle solution in a patent database and a domain knowledge database by utilizing the first principle solution; and (6) the user inputs evaluation parameters and a formula for scheme evaluation. According to the method, a systematic creative design tool is provided, a user interface is set, more creative schemes are generated, the design efficiency and the design quality of the product are improved greatly, and the development period of new products is shortened.