Its name was first recorded in 1333 when a ’sacerdos de Sancto Michaele’ was mentioned in a papal tithe register.
In 1539, it was mentioned as Zent Mijhal, in 1684 as Csik Szent Mihály.
Its Hungarian name received its current form in 1913.
Until, 1919, its Romanian names was Sânmihaiu, then it was changed to Cic-Sânmihaiu, and finally the current official name.

The village suffered a lot in 1694 on occasion of the Tartar invasion, it was then that the neighboring village called Cibrefalva was completely devastated.

The component villages were historically part of the Székely Land area of Transylvania and belonged to Csíkszék district until the administrative reform of Transylvania in 1876, when they fell within Csík County in the Kingdom of Hungary.
After the Treaty of Trianon of 1920, they became part of Romania and fell within Ciuc County during the interwar period.
In 1940, the second Vienna Award granted the Northern Transylvania to Hungary and they were held by Hungary until 1944.
After Soviet occupation, the Romanian administration returned and the town became officially part of Romania in 1947.
Between 1952 and 1960, the commune fell within the Magyar Autonomous Region, between 1960 and 1968 the Mureș-Magyar Autonomous Region.
In 1968, the province was abolished, and since then, the commune has been part of Harghita County.
Its name was first recorded in 1333 when a ’sacerdos de Sancto Michaele’ was mentioned in a papal tithe register. In 1539, it was mentioned as Zent Mijhal, in 1684 as Csik Szent Mihály. Its Hungarian name received its current form in 1913. Until, 1919, its Romanian names was Sânmihaiu, then it was changed to Cic-Sânmihaiu, and finally the current official name.
The village suffered a lot in 1694 on occasion of the Tartar invasion, it was then that the neighboring village called Cibrefalva was completely devastated.
The component villages were historically part of the Székely Land area of Transylvania and belonged to Csíkszék district until the administrative reform of Transylvania in 1876, when they fell within Csík County in the Kingdom of Hungary. After the Treaty of Trianon of 1920, they became part of Romania and fell within Ciuc County during the interwar period. In 1940, the second Vienna Award granted the Northern Transylvania to Hungary and they were held by Hungary until 1944. After Soviet occupation, the Romanian administration returned and the town became officially part of Romania in 1947. Between 1952 and 1960, the commune fell within the Magyar Autonomous Region, between 1960 and 1968 the Mureș-Magyar Autonomous Region. In 1968, the province was abolished, and since then, the commune has been part of Harghita County.
Mihăileni, Harghita