The invention provides an allopatry collaborative design informatization platform based on Web, comprising a client, a Web server, a database server and network line thereof; the client accesses the Web browser by a common browser, the Web browser is in charge of processing request of user, the database server receives the request of the Web server and operates the server according to personal policy, and data is returned to the Web server and then is transmitted to the client through processing of the Web server. The software system thereof is composed of a supported website and a background database, comprising a user login and registration module, a user and character rights management module, a collaborative group distribution management module, a project workflow management function module, a resource information management module, a design data management module, an application program local calling module and a remote access super computer center module. The invention can collaborate and assist people to design and produce complex products, a plurality of associated design efforts can be completed efficiently, design efficiency is improved, and design cost is reduced.