The survey of 1,628 people from MyCelebrityFashion showed that 91% were against the couple getting back together, with only 2% giving a definite "yes" answer to the possibility.
It also found that 76% of women would lose respect for Cheryl if she does reunite with Ashley, while 62% believe her career would suffer, with 44% admitting that they would stop buying her records.
Website marketing director Andy Barr said: "Personally I think it's very sad that the actions of her husband are threatening to affect Cheryl's public image so negatively.
"The results of this study suggest that she's on the brink of public opinion turning against her if she takes him back, proving the pressure she's under to make the right decision when it comes to her career.
He added: "It seems that we're no longer happy with celebrities just doing what they're paid for. It's important that they're 'positive role-models' for younger generations, and that includes the decisions they make about relationships."
The survey also found that 51% of British women believe that Cheryl will take Ashley back, with 84% thinking that Ashley would cheat on her again if she did.
