A women has been arrested in China after reports that she chopped off her husband's penis twice after catching him cheating.

Feng Lung, 30, flew into a rage after finding her husband's messages to his lover in their home in the city of Shangqiu in eastern Henan province.

Fan Lung, 32, used Feng's phone to send the saucy messages to Zhang Hung, 21, but forgot to log out of his email account.

Feng proceeded to get a pair of scissors and attack Fan while he was sleeping, chopping off his manhood.

He was rushed to hospital where his penis was reattached. But it did not end there.

After the emergency operation, Feng went back to Fan's hospital room and severed his penis for a second time before throwing it out of the window where it was feared to have been taken by an animal, according to doctors.

"The first we were aware of what happened was when someone came into the reception area to say a naked man was beating up a woman outside the hospital," a hospital spokesman said, according to The Mirror.

"Staff rushed out to see what was happening and found the patient with blood streaming down his legs hitting the woman.

"He was stopped and the woman was taken in for treatment, and then we discovered she had chopped his penis off again."

Fan's lover said that she would stick by him despite his lack of manhood, saying: "It doesn't matter that he's lost his fertility, he has five children already."

Feng has been arrested for grevious bodily harm by Chinese authorities in relation to the incident.