Moses has made 24 consecutive starts in Premier League games since he was drafted into Chelsea's starting XI.
Since he was drafted into the starting XI as a wing-back, Moses has made 24 consecutive starts in Premier League games.
Antonio Conte's side currently sit seven points clear at the top of the Premier League and Desailly believes Moses is one of the players who has made it possible for Chelsea.
"I'm very pleased with Chelsea," Desailly said live on Sky Sports News HQ.
"When you look at last season where it was very difficult with Jose Mourinho in charge, a whole lot of controversy and the tactics were not working, this year you change it and have three new players.
“(N'Golo) Kante, (Marcus) Alonso and (Victor) Moses and you just change a little bit of the tactics, it's just an amazing season for Chelsea."
Chelsea travel to Old Trafford to face Manchester United in their next Premier Leagues and Desailly believes the game is key to Chelsea’s Premier League title hopes.
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“There are many major important games such as Manchester United this weekend, so you have to be careful,” the former Chelsea defender added.
"These two weeks are the key moments and games for Chelsea but they will make it. There's no reason why the players should shake in front of these various events."