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In new agriculture, with agricultural mechanization development and available softwares, decision making systems, intelegent decision making is an easy process for advanced farmer. Objective of this study is to use analytical hierarchy process, AHP, technique in selecting appropriate combine type from four common combine type Class, John deere 955, Sahand and Kordestan Reaper in the harvesting operation in the Yazd province. The AHP supports the group decision-making process and the use of ergonomic criteria with different and incommensurable metrics. Criterions of this study included: machine losses, safety and drivers welfare, the costs of repairment and maintenance and road traffic. Data analyzed with Expert Choice software version 11. Results indicated from the parameters that Class combine is the most approperiate harvesting machine.