Why my dvd wont play on my player
Does that disc work on other players? Do other discs work on your player?
If you tell us more about the player, the disc, and what happens when you try to play the disc, we'll be able to make better guesses about what the problem is. Can you play other discs? Does that disc work in other players?
Not having specifics, here are some ideas, in the order in which they popped into my head:
1) That's a Blu-Ray disc and you have a DVD player.
2) The disc is dirty. Take a wet cloth (or paper towel), put a little dish soap on it, and gently swipe the shiny side of the disc from the center of the disc to the edge (don't wipe the cloth around and around the disc). Rinse the disc with cold water. Wipe with a soap-free wet cloth. Rinse again. Wipe with a dry cloth (or paper towel).
3) The disc is scratched. Some players handle scratched discs better than others. There isn't much you can do here. There are kits that can repair some scratches, but the kits aren't free, and they don't work a lot of the time.
4) You are putting the disc in upside-down. The side with the printing on it has to face up.
5) Your DVD player is dirty. Open the disc tray and blow as hard as you can into the player. Try not to blow any spittle into the player.
6) Your DVD player is broken.
7) Your disc is NTSC (Japan/US) and your player is PAL/SECAM (the rest of the world). Or vice versa.
8) There is some thing about region codes which is some kind of copyright protection scheme that means not all discs will work with all players.
9) Your disc is a CD, not a DVD. (I think most DVD players can play CDs, though.)
10) Your disc is DVD-ROM, meant to be used in a computer.