Abstract: The forest plant diseases information system was established on the basis of Microsoft Visual Basic 6.0 and Microsoft Access 2000. The techniques used in the system are ADO, SQL language and intelligentized query. The sources of the database was based on Chinese forest disease occurred badly in recent decades and the forest plant disease specimen of Chinese Academy of Forestry. The database included three tables. They were forest plant disease specimen information table including 42 data fields, forest plant diseases information table including 39 data fields and user information table including 4 data fields. In order to make the database safe and easy to be managed, two kinds of users as common user and senior user were set. The senior users were allowed to manage the database, while the common users were allowed to query and browse the information only. With the system, the forest plant disease specimen of Chinese Academy of Forestry and the whole country's forest plant disease information could be managed. The system offering exact and blocking query service contained lots of particular forest plant diseases information and was easy to operate. So it would have a wide application outlook.