The 34-year-old striker, who arrived from Empoli in 2004 and is currently fifth in the club's all-time scoring charts, believes he still has plenty to offer the capital club.
"I have another year of the contract and my intention is to play more. I feel I can still give a lot," Rocchi told Lazio Style Radio.
And he made clear that he would finish his footballing career with the club.
"I know that sooner or later I'll have to stop, but my intention is to conclude my career in the Lazio jersey."
The Biancocelesti striker did admit that he is looking forward to meeting new coach Vladimir Petkovic, who arrived after a short spell at Swiss side Sion.
He said: "I look forward to starting the new season and I am curious to meet the new coach Petkovic."
Rocchi also paid tribute to Petkovic's predecessor Edy Reja, who quit the club at the end of the 2011-12 season.
"I want to give a compliment to Reja for the work he has done over the last years."