Hannan sweet corn is a protected geographical indication product. Hannan sweet corn is a geographical indication certification trademark.

Hubei’s sweet corn originated in Wuhan, while Wuhan’s sweet corn originated in Hannan. Hannan was one of the first areas in the country to grow super-sweet corn.

Hannan sweet corn is known as "fruit corn" and can be eaten both raw and cooked. It is the "darling" in the corn family. Its sweet corn is more difficult to produce and manage than other corns due to shriveled seeds. In terms of planting, most other places use nutrient pots to raise seedlings and transplant them to preserve the seedlings. However, the soil in Hannan is mainly sandy soil, which is very suitable for sweet corn planting. Therefore, it has a pure and sweet taste, soft and thin skin, and a unique flavor. . In addition, local "standardized, branded, and factory-based" production also ensures its first-class quality in the country.

At present, Hannan sweet corn has increased from several thousand acres in 2005 to 100,000 acres now, and its varieties have increased from 8 to nearly 100. Nowadays, the latest domestically developed and introduced “fruit-type” corn and “colorful” corn are also being planted on a large scale in Hannan.

The current administrative area under the jurisdiction of Dengnan Street, Hannan District, Wuhan City

“China’s fresh sweet corn originated in Hubei, and Hubei’s fresh sweet corn originated in Hannan. Hannan The fresh sweet corn can be called "one of the best in China". It is rich in vitamins A, B1, B2, C, minerals and free amino acids. It is easy to digest and absorb by the human body. Its sugar content is as high as 20%, which is twice that of conventional varieties of corn. About, sweeter than watermelon."