Pompey Academy's FA Youth Cup second-round tie at Cray Wanderers will take place on Wednesday, November 21.
The Blues' young guns discovered their opposition after Cray overcame Worthing 2-1 in a first-round tie last week.
Mark Kelly's team recorded a thumping 5-2 victory over Bristol Rovers in the previous round and will be looking to progress to the next stage for the second-successive year.
The tie will take place at Bromley's Hayes Lane ground, scheduled to kick-off at 7.30pm.
Tickets are priced at £5 for adults and £3 for seniors (60+) and juniors (under-18).