Abstract: In the past ten years, some significant economic, social and ecological benefits are made with conservation tillage in Inner Mongolia. Principle and application of some technologies on conservation tillage are systematically described in the paper, for instance, stubble cover, non-minimum tillage planting, integrated weed control, mechanical subsoiling, scarification and compensatory seeding of pasture, and etc. Four kinds of technological patterns are set up, including high stalk with dibble seeding, low stalk with drill, roots with tubers and grassland improvement. Some outstanding problems on programming, complements of agricultural technology, appropriability and reliability of equipments and weeds control. On the bases of long- term research, rules and characteristics of weeds on conservation tillage are summarized. Besides, weeds control is clearly identified as keystone and difficulty in farming-pastoral areas with conservation tillage, which includes the adjusting on trends, modes and means of integrated weeds control and the establishing of a comprehensive thinking on weeds control.