The Spanish defender insists that he has a perfect relationship with the coach and wants him to sign a new contract with the Catalan club
The 41-year-old coach has been coy about his long-term future at Camp Nou, with his contract due to expire at the end of the season.
Having guided Barca to 13 pieces of silverware since taking over the club's first team in 2008, there are suggestions that Guardiola is in need of a new challenge, but Pique thinks the coach has not lost his motivation for the job.
"He must continue at Barca for all he has experienced and for all there is still to experience," Pique told reporters.
The Spain international then denied suggestions of a bust-up between him and Guardiola after being omitted from Barca's match squad for the 3-1 Champions League victory against Bayer Leverkusen last week.
"Guardiola is key in the dressing room," Pique noted. "He gave me the opportunity to experience this and I will always be grateful to him.
"I will never argue any decision he makes."
Since November, Goal.com has been publishing exclusive extracts from Graham Hunter's highly-anticipated new book, 'Barca: The Making of the Greatest Team in the World'. The very last extract looks at Andres Iniesta's risky return from injury in the 2009 Champions League Final and how he was described by Wayne Rooney as the 'best midfielder in the world'. Don't miss it!