China competed at the 2018 Summer Youth Olympics, in Buenos Aires, Argentina from 6 October to 18 October 2018.
Medals awarded to participants of mixed-NOC (combined) teams are represented in italics. These medals are not counted towards the individual NOC medal tally.
China qualified two archers based on its performance at the 2017 World Archery Youth Championships.
China qualified three players based on the Badminton Junior World Rankings.
China qualified a boys' and girls' team based on the U18 3x3 National Federation Ranking.
China qualified a girls' team based on its performance at the 2018 Asian U19 Championship.
China qualified one boat based on its performance at the 2018 World Qualification Event.
China qualified a girls' combined team based on its ranking in the Youth Olympic Games Junior Nation Rankings.
China qualified one dancer based on its performance at the 2018 World Youth Breaking Championship.
China qualified five athletes based on its performance at the 2018 Cadet World Championship.
China qualified a girls' team (9 athletes) to the tournament.
China qualified a mixed pair based on its performance at the 2018 Acrobatic Gymnastics World Championship.
China qualified two gymnasts based on its performance at the 2018 Asian Junior Championship.
China qualified one gymnast based on its performance at the 2018 Asian Junior Championship.
China qualified two gymnasts based on its performance at the 2018 Asian Junior Championship.
China qualified two pentathletes based on its performance at the Asian/Oceanian Youth Olympic Games Qualifier. China also qualified another female pentathlete based on its performance at the 2018 Youth A World Championship. They must decide which quota they will use.
China qualified one roller skater based on its performance at the 2018 Roller Speed Skating World Championship.
China qualified one boat based on its performance at the Asian Qualification Regatta and another boat based on its performance at the 2017 World Championships.
China qualified two boats based on its performance at the 2018 Singapore Open (Asian Techno 293+ Qualifiers). China later qualified two IKA Twin Tip boats based on its performance at the 2018 IKA Twin Tip Racing Youth World Championship.
China qualified three sport shooters based on its performance at the 2017 Asian Championships.
China qualified three sport climbers based on its performance at the 2017 World Youth Sport Climbing Championships.
However, Song was not included on the final start list for the Youth Olympics.
China qualified two athletes based on its performance at the Asian Qualification Event.
China qualified two athletes based on its performance at the 2018 Asian Youth Olympic Games Qualifier.
China qualified four athletes based on its performance at the 2017 World Youth Championships.
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