The winner of this competition entered the following season's Scottish Cup at the preliminary round stage.
Semi-finals are played home and away over two legs with the winner on aggregate progressing to the final.
If the aggregate score is tied at the end of the second leg, the match will also proceed direct to a penalty shootout.
The four junior clubs qualified for this season's Scottish Cup, are not included in the draw for the first round: The first round draw took place at Hampden Park, Glasgow on 22 August 2017 and was made by SJFA president Felix McKenna and Linlithgow Rose club president Les Donaldson.
Hurlford United won 2–1 on aggregate Auchinleck Talbot won 2–1 on aggregate The Final of the Scottish Junior Cup was played at Rugby Park, Kilmarnock on Sunday 4 June with a 4.15pm kick off.