The chicken egg, which is about two centimetres long and weighs 2.58 grams, was laid on Monday by a Malaysian bantam, one variety of chicken owned by He Daiyou, a 55-year-old hairdresser from Shapingba District, Chongqing.
The egg, less than half the size of a quail egg, has attracted media attention and surprised the owner.
The world's smallest egg, which measures 2.1 centimeters in length and 3.46 grams in weight, is owned by Donnie Russell from West Virginia state, in United States.
He said the hen started to lay eggs last November, and it has laid about 150 normal eggs.
"The mini egg really surprised me, " state-run Xinhua news agency quoted him as saying.
"I have looked into ways to declare to the Guinness World Records and I'm ready to give it a try," He added.
He, a lover of cats, dogs and birds, bought the Malaysian bantam last year for USD 32.
He sells small chickens that the bantam has hatched for between 80 yuan (about USD 13) and 150 yuan.
