Liberal MP Michelle Lensink says Sports Minister Leon Bignell should explain a recent Facebook post where he said that, even though he's confident the SA cycling race is safe, nothing is guaranteed.
"Given the minister had just met with the UCI President Brian Cookson in Switzerland, it is concerning he couldn't guarantee the Tour Down Under will continue," Ms Lensink said on Monday.
Mr Bignell said cycling's world governing body was still conducting a review of its international cycling competition.
"While nothing can be guaranteed until the final decision of the review is announced later this year I am optimistic our race is safe," Mr Bignell said on Facebook.
"We will continue to have a strong relationship with the UCI, the Tour de France and the teams to ensure they know the big improvements we make to the race each year and we know what their priorities are."
SA's contract to host the Tour Down Under expires after next year's edition of the race in Adelaide and environs.