Listen to podcasts on all your devices
On your Mac: In the Podcasts app , choose Podcasts > Preferences > Advanced, then make sure “Sync follows across devices” is selected.
On your iPhone, iPad, or iPod touch: Go to Settings > Podcasts, then turn on Sync Podcasts.
If you have an iPod classic, iPod nano, or iPod shuffle, you have to sync your device with your Mac to add podcasts and other content to it. See Sync podcasts between your Mac and iPhone or iPad.