please tell about airport bus timing and where i can get the Xian airport bus?

Mukesh, does your flight leave from XA Airport at 9:00 am? If so, it is suggested you hail a taxi to go directly to the airport at a cost of CNY160.
The nearest shuttle bus station is Xian Hotel; the first bus departs at 7:00 and it takes around 1h on the way, it might not leave you enough time board your flight.