Li Xin entered the middle school affiliated to Shanghai Conservatory of Music for clarinet learning with Professor Gu Peng and later entered the middle school affiliated to the Central Conservatory of Music in Beijing, study with Professor Tao Chunxiao. Li Xin has won the prizes at the National Clarinet Competition at the age of 16 in Beijing and the "Shanghai Spring" International Music Festival in 2001.
With a full scholarship awarded by Yong Siew Toh Conservatory of Music at National University of Singapore, Li Xin continued studying with Ma Yue and completed his Bachelor degree of music. In April 2005, Li Xin was among the first group of six Conservatory students selected for Yong Siew Toh Conservatory Fellowship Programme at the Peabody Conservatory of Music in Baltimore, USA, where he received coaching from Peabody faculty, as well as the clarinettist in Philadelphia Orchestra and the professor at Juilliard school.
In the past years, Li Xin performed often with the conservatory orchestra in China and solo performance at Shanghai Concert Hall. In Singapore, he performed with the Conservatory Orchestra often as principle clarinet and as a member of a Conservatory Wind Quintet. He also played in the Peabody Symphony Orchestra, Singapore Symphony Orchestra, the Malaysian Philharmonic Orchestra and as Principal clarinet in Macao Orchestra. He often goes to the international music festival as well, like Asian Youth Orchestra, the Canton International Summer Music Academy, where he performed with some renowned soloists and conductors, such as Martha Argerich and Charles Dutoit.
In 2007, Li Xin continued his studies in Europe, where he received lessons with the clainet professor in Geneva, Zurich and Lyon. He was accepted as freelance musician in the Orchestra of Zurich Opera and the Orchestra Musikkollegium Winterthur in Switzerland.