Take the bus at the Capital Airport to the South Square of the West Railway Station (the operation time is from 7: 20 to 24: 00, every 30 minutes). Get off at Guang 'anmen Station and take a taxi. It's about 2 kilometers, and there's not much traffic jam. The starting price should be there.
You can get off at Guang 'anmen North by bus and get off at Xibianmen Station (2 stops). After getting off, walk north to the intersection, turn west and walk for about 300 meters.
Subway route: Take the Airport Express at Capital Airport and get off at Dongzhimen Station, then transfer to Metro Line 2 and get off at Fuxingmen Station. Get off at Metro 1 Line and get off at Nanlishi Road Station, and walk for a while.