Mengxiu Township (; ) is a township in Ruili, Yunnan, China. As of the 2016 statistics it had a population of 11,786 and an area of .
The name of "Mengxiu" means a place where wild ginger grows in Dai language.
As of 2016, the township is divided into seven villages:
In the Qing dynasty and Republic of China, the indigenous people were Jingpo people.
On 25 February 1956, the Government of Ruili County set up the Mengxiu Production and Culture Station () to maintain control of the region. In 1965. it came under the jurisdiction of Jiele District. During the Cultural Revolution, its name was changed to "Mengxiu People's Commune" and then "Red Flag People's Commune" (). It was incorporated as a township in 1986.
It lies at the northern of Ruili, bordering Myanmar to the northwest bounded by the Namwan River.
The highest point is Yingpan Mountain (), elevation . The forest coverage rate of the township is 74%.
The township's economy is based on agriculture. The main crops are corn, rice, lemon, and walnut.
In 2016, the local population was 11,786, including 6,190 Han (52.52%) and 4,604 Jingpo (39.06%).
The Ruili Botanical Garden sits in the township.
The China National Highway 556 passes across the township.
The Ruili Jingcheng Heliport serves the township.