The band was founded in 1998 by drummer Lars Borup. However, the search for other permanent band members was unsuccessful, so Seven Thorns was put on hold in 2000. In 2004 Mik Holm joined Lars as songwriter and lead singer which led to the first complete line-up later that same year. The band's first single Artificial Night was recorded and released in the beginning of 2005 and was nominated for a Danish Metal Award.

From 2005 to 2007 Seven Thorns was put on hold with the exit of Mik and the addition of a new lead singer. The original Seven Thorns was revived again in 2007 by Mik and Lars after the 7thorns project had been terminated.

Seven Thorns was ready with new line-up in late 2008 and a single entitled Forest Majesty was recorded over New Year of 2008-09 and released in March 2009 by Airbourne Records, a small Danish label.

After the release of the debut album Return to the Past in 2010 through Nightmare Records Seven Thorns signed a promotion contract with the German agency Rock N Growl.

In the summer of 2011 Seven Thorns embarked on their first European tour along with Circle II Circle playing multiple shows and festivals.

The band are currently working on a follow-up album entitled II, set to be released in early 2014.