Abstract: This paper introduced the design and implementation of a pocket PC-based knowledge model system for wheat cultivation management on Windows Mobile. On the basis of summarizing and extracting wheat cultivation theory and technology achievements, the system model was built by using UML language. By using Microsoft Visual C#, wheat cultivation management knowledge model classification and user interface were designed on the platform of Microsoft Visual Studio .NET 2003. SQL Server CE 2.0 was used in the system to manage basic data. The system can make the design of pre-sowing cultivation plans, prediction of regulation index dynamics and support of basic data management functions. The construction of this system can provide new representative formats for digital crop cultivation management decision.