Guo Xiaojin was born in Guangdong Province, China, and began her musical journey at the age of four with the piano before picking up the Erhu at six. She received guidance from renowned Erhu artists, including Zhang Lei, Liu Hong, Zhang Zunlian, and Zhu Lin, during her early training.

From 2001 to 2007, she studied at Shenzhen Art School, majoring in Erhu with a minor in piano and vocal performance. She furthered her education at Raffles Music College, Singapore, from 2007 to 2009, earning a Diploma in Erhu Performance.

In 2022, she was admitted to the Traditional Music Department of the China Conservatory of Music as an Erhu major. She continues to study under Professor Zhang Zunlian, a distinguished Erhu performer, educator, and doctoral supervisor at the conservatory.