This paper presents foraging behaviour and pollination requirements of honey bee in relation to rapeseed production Apis cerana worker bee started foraging at 08.04h and ceased their foraging activity at 16.02h. Thus, the duration of foraging activity was 07.58h. The duration of single foraging trip was found to be 8.6 min Peak population was observed between 09.00h to 11.00h of the day. A cerana spent an average of 12.25 sec per flowers per min. Pollen loads on Apis cerana forages were maximum at 12.00h weighed 9.6mg. During the hours of the day, the number of hectare collectors increased from morning to evening whereas, the trend was reverse for pollen collectors. Effect of different pollination treatment revealed that the crop pollinated by Apis cerana caused 1177% and 9.7% higher seed yield than control (pollinator excluded) and open pollinated plants, respectively. Moreover, the siliqua setting, length of siliquae, number of seeds per siliquea were higher in bee pollinated plants as compared to control and open pollinated plants. The oil content and seeds germination was found from control and open pollinated plants, respectively.