The season featured 12 teams from the 2017–18 Azadegan League, two new teams relegated from the 2017–18 Persian Gulf Pro League: Siah Jamegan and Naft Tehran and two new teams promoted from the 2017–18 League 2: Karoon Arvand Khorramshahr and Shahin Bushehr both as champions.
Gol Gohar won the Azadegan League title for the first time in their history.
Gol Gohar and Shahin Bushehr promoted to the Persian Gulf Pro League.
Peyman Ranjbari and Shahriyar Moghanlou were the league's top scorers, with 16 goals each.
Before the start of competition Naft Tehran was relegated to League 2 following financial problems[1] Note: Flags indicate national team as has been defined under FIFA eligibility rules.