The Ruo Er Gai Grasslands are about a 4 hour drive from Jiuzhaigou National Park. They are about 2 hours from the airport....and very beautiful!
You can rent a private car from a travel agent or a taxi to get there.

Thanks Mr Kai Wen, thanks for your information. I'm going to Chengdu for 7 days, plan to go jiu zhai gou, huang long, ruo er gai grassland and chengdu city including to visit the pandas reservation base, do u think isit enough of time? i plan to take the flight from chengdu to jiu zhai gou coz can save a lot of time even though a bit expensive.