On 28 July 2012, Jin won the gold medal in the men's 10 m air pistol at the 2012 Summer Olympics.

[3] On 5 August, he won the gold medal in the 50m, becoming the first man to successfully defend the 50-metre pistol Olympic title.

He is one of three shooters to have won three Olympic individual gold medals, along with Ralf Schumann of Germany and Kim Rhode of the United States.

He became the first person since Torsten Ullman of Sweden in 1937 to have won three consecutive World level Championships in 50 metre pistol.

On 6 September 2018, Jin won the 10 metre air pistol gold medal at the 2018 World Shooting Championships after a shoot-off against Russia's Artem Chernousov, trailing for most of the final round.