Cannavaro has urged the fans to back the players as they battle Juventus to win the league title.
"[The fans] are our secret weapon - we cannot wait to take the field to try to make them happy," Gazzetta dello Sport quotes Cannavaro as saying.
"We face a difficult month but we must make that final push. We have the ability to [win the league]."
Napoli are three points behind Juventus in the league table.