Am currently in Xian shiyou university I want to go airport

Xian Shiyou University in which district? Yanta or Huyi?
If in Yanta District, you can walk to Jixiangcun to take metro line 3 to Dayanta, transfer to line 4 to Xian North Railway Station, then transfer to line 14 to the airport.
If in Huyi District, you need to take bus no. 928 to at Zhoubei Shizi to Zhangba 6th Road, then take metro line 6 to Keji Road, Exit E out, walk northeastward to take the airport shuttle bus at Ziction Liberal Hotel to the airport.