This should see the 29-year-old former Bradford player stay with Trinity until the end of the 2016 campaign.
Scruton joined Wakefield from the Bulls in March, signing an initial one-year deal. He has played 16 Super League games for Trinity in theat time, gaining 1300 metres and scoring two tries.
The former England international, who has won Grand Final and World Club Challenge honours while at Bradford and Leeds, is determined to help drive the Wildcats to a play-off place next season.
“I’m really happy,” he said.
“From the moment I got here I knew it was a club that I wanted to spend the next couple of years at as long as everything was going well on the field and everything has.
“I’m chuffed to bits to have another two years and hopefully we can move forward as a team and start being considered play-off candidates instead of relegation battlers.
“The top eight over the next couple of years is a big incentive, it’s where everyone wants to be. With the players we’ve got and this run we’ve been on it’s completely within our grasp and it’s something that everyone is working towards.
“I didn’t think it (the transfer) would have affected my game as much as it did but those first few weeks I was garbage and some of the fans didn’t hesitate in telling me.
“I’ve not had that for a long time so I’m just glad I’m starting to show people what I’m capable of and why Wakefield signed me, and I’ve been rewarded with a two-year deal.
“As a prop forward at my age, hopefully I’ll be playing my best rugby for Wakefield Wildcats.”
Wakefield head coach James Webster added: “It’s tremendous news that Nick has extended his stay here at the club. Nick has been tremendous for us both on and off the field, adds a lot of experience and is a very influential player for us in the middle of the park.
“He was somebody that I wanted to tie down as soon as possible and for a player of Nick’s stature to commit to Wakefield is a tremendous boost for where we want to go.”