Hello ! i want to go to the research base of the giant panda breeding.

You can take bus no.99 at Huaxiba Station, and get off at Zoo. Then transfer to bus no.198A to get to the Base Bus Stop. After arriving, walk northeast around 260 yards (240 meters) to find the destination.
Or you can just take a taxi from your hotel. The cab fare is CNY 40-50 in the day time.
You can choose the way you like. :)

Thank you very much for your answer. We took the taxi to go, and took the bus to come back to the hotel ! :)