The invention relates to a voice collecting, distributing and back feeding system of agricultural reverted by the voice system through arranging, assembling and analyzing voice signal related to agricultural transmitted by fixed telephone or mobile phone on public exchanging network or internet. It is mainly made up of user voice distribution, receiving system, telephone exchanging device, host voice service station, internet distribution system and compiling center. The normal farmer dials to the voice service station with fixed telephone or mobile phone, describes the demanded information to service system with voice mode, the system will records the voice of the other side automatically, the voice is classified according to the preference of farmer to voice, processes them and transmits them into the information databank, then carries on information process through the compiling center and feeds them back to farmer through network, thus the farmer can acquire the needed agricultural information in time.