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 make sure Sync Podcasts is turned on.
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.