Soft computing is a collection of methodologies that aim to exploit tolerance for imprecision and uncertainty to achieve tractability,robustness and low solution cost.The problems with uncertain factors in complex systems is solved by combining fuzzy logic with intelligent technology,to access the reality of the objective facts.With the development of Chinese agriculture into the intelligent stage, soft computing technology has been used in agricultural production more and more widely.The application research of soft computing techniques in crop yield prediction,weed detection and monitoring of land use and land cover were elaborated,and the prospects of soft computing techniques in agriculture application research and development was discussed in this paper so as to provide theoretical support for ensure food security in our country and the construction of a world-class level of agriculture.