In order to promote the development of winter rapeseed production in double-crop rice area in southern China, two major issues ,i.e. breeding of early-maturing varieties and implementation of mechanical cultivation ,need to be resolved. After nearly five years of systematic research, the research group has successfully bred five new varieties with early-maturing, disease resistance and high oil content successfully, developed a 2BYF(D)-6 type stubble no-tillage multi-seeders for rapeseed for the requirement of rapeseed with tillage free (shallow tillage). Matching with the high-density early-maturing varieties of rapeseeds, a 4YC-200 type rapeseed combine harvester has been developed. At the same time, one-time rapeseed controlled-release fertilizer and ripener are applied and agronomic operation procedures of mechanical cultivation are formed in double rice area in southern China. Test results showed that the income increased to more than 300 yuan per mu by mechanical cultivation of rapeseed. In conclusion, it is effective to reduce rapeseed planting cost, expand cultivation area and improve yield and economic efficiency for rapeseed production via the implementation of integration technologies.