Is it convinient to stay in Foshan for Canton Fair?

Find the nearest subway station to take Guangfo Line to Xilang Station, and then take the line 1 to Gongyuanqian Station, where you can transfer to Line 2 to Changgang Station. And then transfer to Line 8 to Pazhou Station. Take the Exit C and walk about 300 yards, you will raach the fair site.

And HKIA is about 85 miles to FS.

Although it is only around 30km from Guangzhou, it is not as convenient as staying in Guangzhou. Buses and metro systems are pretty convenient to commute.

Anyway, here the way from FS. Without knowing your exact location, here is the general suggestion: almost all long-distance bus stations there have direct buses to Guangzhou. Take one to Guangzhou Tianhe, Fangcun or East Bus Station. Then take a taxi to the canton site. And from the stations, subway to canton site is also accessible.