This article takes a forestry company in Heyuan City of Guangdong Province for example, to research the FMUs (Forest Management Units)-oriented subcompartment data sharing technology, and realize the software platform based on Visual Basic development environment. The software platform can perform the normalization processing, cadastral number coding, data extraction, data updating and other pragmatic operations on subcompartment data, so as to achieve the subcompartment data sharing between forest management unit and Guangdong forest resources center.