Taking seeds of broccoli ‘Yuguan’ as materials,seed germination rate,height at cotyledon open period,seedling quality at adult plant were compared under floating seedling and moisture seedling.The results showed that the moisture seedling of germination rate was significantly lower than floating seedling,plant height,height at cotyledon open period and adult plant period lower than the floating seedling,seedling roots orthostatic and seedling toughness significantly better than the floating seedling,it showed that seedling quality under moisture seedling was better than floating seedling.