The invention provides a method for constructing a virtual networking experimental platform based on a real networking environment, which is characterized by comprising the following steps: 1, drawing a topological diagram; 1.1, adding equipment and so on according to the drawing flow of the topological diagram if a project is a novel project; and selecting, reading and saving files to load a project if the project is modified on the basis of the prior project or an unfinished project is performed; 1.2, initializing equipment information according to equipment selected by users or equipment for loading the project through a system; 2, configuring network equipment; and 3, testing connectivity. The method has the following advantages: firstly, the method expands the operating environment of networking experiments of a network laboratory, enriches the realization mode of the networking experiments, and is in the service of computer network teaching; and secondly, the system can be independently operated on terminals in a local area network environment, and schools or departments without computer network laboratories can use the set of system to offer networking experiment courses for students.