Can Hulk die?

No, it is impossible for the hulk to die. According to the original comics (not the newer movie the hulk cannot die. The hulk is a spirit not a person. It needs a person to "come out" The more you hurt the hulk the stronger the guy gets. So how do you kill something if it gets stronger when you hurt it. You practically can't. Even superman probably couldn't eventually superman would annoy the hulk of so much that the hulk would beat him up. The hulk also has very high speed regeneration.