Fully utilizing the technical advantage of weather radar monitor net of Jiangsu province and resorting to the information of the radar echo and the ability of e xact orientation of GPS,the radar-commanding system of artificial precipitation and hail suppression by rocket provides the operators with the handy,visual and alternant operational platform which can make decision.The system supplies scie ntific,impersonal and quick ground to command of the work and realizes the ratio nalization and automatization of the direction of operation,thereby mend the eff ect of the work and improve the scientific level of the decision making of weath er modification and ministrant ability of prevention and decrease of the disaste r.