Abstract: In this paper, the proposed optimization model based on theories of deficit irrigation and network technology is applied to optimize deficit irrigation schedule of single crop. In order to apply the model, linear programming and dynamic programming methods were used, the technologies of TCP/IP, Client/Server model, ASP(Active Server Page) and the programming languages of VBScript, Visual Basic 6.0 were selected. The result provides a approach to real-time computation of deficit irrigation schedule optimization. The web-based method is a general program, which provides a feasible program for saving human and material resources.