The University found 53.8 per cent of smokers treated for erectile dysfunction were cured within six months when they quit nicotine habits.
"Men who quit early have a 91.5 per cent greater chance of a better sex life", Sophia Chan, a professor who helped conduct the survey said.
She also said that erectile dysfunction was "very prevalent" in China and Asia and programmes to help smokers quit should be extended across the region.
Her colleague Lam Tai-hing said: "Smokers should be aware of such adverse effects from their smoking and should quit now to prevent erectile dysfunction and other diseases caused by smoking".
The study was conducted on men suffering from erectile dysfunction between the age of 30 and 50 by the university's School of Public Health and Nursing.