This study aimed at developing a database of plants in Chiang Mai University in order to be a guideline for area planning and plant conservation. The researcher studied 165 different kinds of plants found in Suan Sak area of Chiang Mai University. The research was divided to 27 areas for collecting data. The researcher recorded and took photos on the details of plants, such as leaves, flowers, fruits, and trunks. Moreover, the positions of 22 kinds of important plants, plants that should be conserved and economics plants were recorded to specify the location of each plant in the map by using different symbols to symbolize each plant. Furthermore, database was designed and developed by using MySQL program and PHP language. For the map displaying plants, NetBean IDE program was used. From the survey and record of position of plants, plants that found the most were Teak, Bastard Teak, and Bodhi Tree, respectively. However, there were several kinds of trees that found only one; Iron Wood, Beleric Myrobalan, Red Cotton Tree Flowers Dried, Bael, Indian Elm and Baobab. In terms of the user satisfaction 26 staffs of Buildings, Grounds and Utilities Division: BGUD, Chiang Mai University had high level of satisfactions towards the system.