Victory leaves Posh in fifth spot but still keeping up the pressure on second-placed Derby County.
Our match photographer David Lowndes took these snaps of just some of the fans in the crowd.
Take a look and see if you can spot someone you know.
You can get all the latest Posh news, here.
1. Posh 2 Exeter 1
Posh v Exeter City fans gallery Photo: David Lowndes
2. Posh 2 Exeter 1
Peterborough United fans at the win over Exeter City. Photo: David Lowndes
3. Posh 2 Exeter 1
Peterborough United fans at the win over Exeter City. Photo: David Lowndes
4. Posh 2 Exeter 1
Posh v Exeter City fans gallery Photo: David Lowndes