Heaven and Hell in Buddhism I need to understand some concept about Buddhism. 

Does Buddhists believe on after live of Paradise and Hell? What are the belief of Buddhists regarding this?
Yes, there are 31 realms of existences.

From top to bottom: 


4 immaterial realms
16 fine material realms
6 heavens
human realm
Asura hell
ghost hell
animal hell
Niraya(hells of unimaginable suffering)


Life spans of each realm varies, but there are no ever lasting places of existence. Yes, you will keep being born in these places again and again according to your Karma, every time you die, until you attain Nibbana and end the process.