The Blues will host Manchester City at Stamford Bridge on Saturday, but they first must face Nuno Esprito Santo's side at Molineux.
And Hazard is well aware that his side must win if they want to have any chance of closing the gap with league leaders City.
"We dropped points against West Ham already, against Everton, so this kind of game we need to win." Hazard said.
"After we play against big teams and in the big games you never know, you can draw or lose. So when we play these kind of games you want to win, but you also know that away is always hard.
"It's not enough just to think we're going to win, it's not like this in the Premier League. You need to show that on the pitch you want to win and you deserve to win.
"What I see from them is they are good players. I know Joao Moutinho was playing in France and I watch the French league so I know him.
"But I think the manager [Nuno Espirito Santo] is good as well, they are playing a good style of football so it's going to be a good game."