Abstract: The investigation of plant species is a fundamental work of the forestry,ecology and other fields,aiming to identify the plant species and to provide the basic data for the further research work. This method is to use photography in combination with GIS,GPS and other technology to complete the survey,which contains the characteristics of investigation,data storage,data exchange and query. The survey includes two aspects of field work.The first is to finish the shooting photo group,which includes the main part of the plant characteristic information and the second is to purfect the record of the investigations,including relevant information and basic geographic information,etc. On the basis of field investigation,the corresponding data compilation and inputting work are completed for the identification of plant species according to the procedures.