Team principal Martin Whitmarsh has said that a lot of work was done on the car during the break since the Malaysian Grand Prix, and Button is confident that he can start to pick up points.
"In a funny way, the Chinese Grand Prix almost feels like something of a reboot of the start of my season," Autosport quotes Button as saying.
"Taking home two points from the first two races obviously wasn't what we had in mind at the beginning of the year, but I think everybody in the team has picked themselves up and really attacked the task of addressing our car's issues.
"We know where we're losing performance, so I think we're actually all looking forward to seeing just what we can achieve in Shanghai."
Button said recently that it is still possible for him to win the title.