Li Jiajin is a 17-year-old professional football player from CHN. He currently plays for Shandong Taishan U15, wearing the number 11 shirt. At the international level, he represents China U16. He plays primarily as a Midfield.

Across 7 appearances in the Chinese U15 League 2025, Li Jiajin registered 0 goals and 0 assists, while completing 1 key passes out of 57 total passes with a passing accuracy of 6.1.