Abstract: Aiming at the problem of low intelligent and data transfer unstable of integration machine of water into fertilizer, the integration machine of water into fertilizer was designed based on computer control, and the communication system was improved. The integration machine of water into fertilizer was constituted of core controller, data acquisition module, irrigation and fertilization module, communication system module and alarm module. The communication system module transferred the data information by the form of building wireless sensor network（WSN）, and fusing Zigbee and GPRS wireless network. The communication system architecture and communication node were designed to ensure the data was transferred fast and accurately. The communication system and field irrigation test results show that the communication system could meet the requirement of data transfer fast and accurately; the irrigation operation is stable, it could do the irrigation operation according to the state of oil timely.