Muramatsu was born in Yaizu on December 16, 1989. After graduating from Fujieda Higashi High School, he joined Japan Football League club Honda in 2008. In 2009, he moved to J2 League club Shonan Bellmare. He played many matches as center back and Shonan was also promoted to J1 League from 2010. In 2011, he moved to Shimizu S-Pulse. He played many matches as defensive midfielder, not only center back. He also played for Tokushima Vortis (2014), Vissel Kobe (2016) and Giravanz Kitakyushu (2018). He retired end of the 2018 season.