A soil testing and fertilizer recommendation system was studied and developed from our research and practice for many years.The system is based on the computer technology,database technology and web technology.It is applied in soil testing lab to improve the efficiency of soil testing and the precision of fertilizer recommendation.The procedure of editing soil sample lists,getting data from measuring instruments,saving and processing the data and fertilizer recommendation is able to run by the system automatically.It has been used widely in Chinese soil testing and fertilizer recommendation.