Abstract: Conservational tillage technology originated in the United States had been used in many countries of the five continents on the world by development from the mid-20th century to now. It had been fully demonstrated and extended conservational tillage technology in the arid area of north of China，while it was still in the stage of experiment and research about conservation tillage diversity and adaptability in the wheat-rice double cropping area and double cropping rice region of south of China.Taking Yangtze River Delta region for emphasis，traditional precision farming technology and the past of equipment were recalled in the rice-wheat rotation field，analyzed necessity for technology innovation，and recited the technological advances in the past 30 years. Based on the investigation and experiment，combined with the media information，successes and failures about the main technology models and typical equipment were analyzed and evaluated at present，and further explorations about‘less ground-breaking，multi-covering’，combination of farm machinery with agronomy，and acceleration innovation of technology and machinery were proposed.