Based on Visual Basic program language，MatLaser Database software is built up. The database is designed for laser resonator software MatLaser. Firstly，resonators are classified mainly by stable standing wave cavity，stable travelling wave cavity，unstable standing wave cavity，unstable travelling wave cavity， phase conjugate cavity and beam transmission. Secondly，resonators are classified by laser wavelength，work material，output power，laser working state，authors and references，etc. Meanwhile，the resonator layout in the references is also included into the software. A large amount of typical resonators are collected into the database software. Laser resonator designers can find the initial construct of the laser cavity through this database conveniently. The data can be exported in the form of the file and opened by the laser resonator software MatLaser to analyze and design to satisfy the application.