Juventus coach says the weekend game against Chievo should not be taken lightly.
The Bianconeri opened a five-point gap at the top of the Italian Serie A last week but the Italian insists that it's too early to say how important the advantage is in respect to the title race.
"The Chievo game is important, I believe all games are important from now until the end of the season," Allegri said.
"It will not be as easy as many are predicting because against Fiorentina, when the score was 1-1, they [Chievo] had 2-3 goal important goal opportunities.
"They are physically fit and [Rolando] Maran is a very good coach. We'll see in the end if we were capable of winning the game.
"We still have to win many games to achieve our objective. Then whether it's plus three or plus eight in the table, what is important is to be at the top on May 31.
"Of course it's better to be at plus eight or plus five [at this stage of the season] rather than minus three but with three points for a win, you draw two games, whoever is chasing wins them both and you lose four points.
"This is why we have to take it one game at a time."
Asked to give an update on injured players, Allegri said: "As for injured players, [Andrea] Pirlo resumed training yesterday, we'll assess him later on today.
"I will speak with Andrea, he could play, if not we have a game in mid-week [against Parma] and one next week on Sunday.
"We also have [Paul] Pogba and [Claudio] Marchisio in midfield who would miss our next game if booked so we will decide together the best options for tomorrow."
Meanwhile, the 47-year-old says that it is unlikely for new players to join in defence after the recovery of Andrea Barzagli.
"First of all [Andrea] Barzagli is recovering from injury, he could be in the squad tomorrow," Allegri explained.
"He improved a lot over the last few days and this is very important. He's still not ready to play but I'm optimistic, he's physically and mentally fit but he had to spend six months on the sidelines unfortunately.
"So in the defensive department we're happy. Then granted, sometimes the transfer market forces you into taking decisions but as I already said it's important to sign quality players, players who can raise the quality of the squad."