Abstract: The paper aims to study correlation between of pod length and the yield components in hybrid Brassica napus, 649 combinations of Brassica napus were used for field experiment, laboratory test and correlation analysis. The results showed that: The average pod length of Hybrid Brassica napus was 6.4596 cm, the range was 4.7184-8.6463 cm, Pod length between 5~7cm material accounts for 96.76% of the proportion of the total, However, the material with average angular fruit length greater than or equal to 8cm is only 1.54% of the population, and the material less than 5cm is only 1.70% of the population, Instructions there are few short - Angle pod in the rape.Pod length and 1000-grain weight(r=0.3815), seeds pod(r=0.4324) and yield were very significant positive correlation (r=0.2347), with pods per plant(r=0.0076) and pod length has no significant positive correlation, at the same time in the breeding of longer pod materials that not only can improve the Angle of 1000-grain weigh , seeds pod and yield plant , and will not reduce the pods per plant. Therefore, increase of rape pod length, improve rape production.