This paper mainly studied on the key cultivation technology of oilseed-vegetable-dual-purpose rape, experiments with laboratory testing, including the research of suitable height of harvesting shoot, the degree of harvesting shoot, the contrast experiment of large blocks, nutrition structure analysis of shoot. Harvesting shoot have a certain impact on yield and agronomic traits, but its total economic benefit is very significant, and is a rape synergistic technology good for promotion, having broad application prospects.