In addition, Xu Xin along with Ma Long and Zhang Jike won the men's team gold medal at the 2016 Summer Olympics in Rio de Janeiro.

In late 2017, he had a disappointing German Open, where in doubles Xu and his partner Fan Zhendong were knocked out in the Round of 16, and lost in the Quarterfinals to Lee Sang-su 4–0 in the singles event.

[citation needed] Xu Xin started his 2018 year by participating with teammates Ma Long, Fan Zhendong, Lin Gaoyuan and Yu Ziyang in the 2018 ITTF Team World Cup, beating Japan in the final.

Xu Xin entered one of the six platinum events of the tour, the Qatar Open, seeking an unprecedented fourth title.

The following day, Xu Xin along with Fan Zhendong beat Jun Mizutani and Yuya Oshima to claim the men's doubles title.

Xu Xin partnered Ma Long to claim his second doubles title of the year defeating Lee Sang-su and Jeong Young-sik in the final.

At the next World Tour platinum event, the Korea Open, Xu Xin was seeded 3rd but lost in the Round of 16 to Jang Woo-jin.

[citation needed] At the Swedish Open, Xu Xin was looking to defend his title, but lost to top seed Fan Zhendong in the final.

Xu also claimed his first mixed doubles title ever at the Austrian Open, winning with Liu Shiwen over Cheng-I-Ching and Chen Chien-an in the final.

Heading in as the number 2 seed at the 2019 ITTF World Table Tennis Championships, Xu Xin was looking to prove himself during this competition.

Because of the seedings, #1 Fan Zhendong, #3 Lin Gaoyuan, #9 Liang Jingkun, and #11 Ma Long were all drawn in the top half of the draw.

The last time this happened was at the 2003 World Championships, where Austria's Werner Schlager faced off against Joo Saehyuk in the men's final.

In this tournament, Xu Xin showed signs of slowness and tiredness, proposed to be due to the many weeks of play on the world tour.

At the 2019 Chinese National Championships, Xu Xin and four of his other prominent colleagues, Ma Long, Fan Zhendong, Liu Shiwen, and Ding Ning all pulled out of the competition.

Due to his outstanding performances and showman-like qualities, Xu Xin gained the nickname of "XUperman", holding true to his superhuman play.

Xu Xin was originally slated to play at WTT Doha in March, but along with the rest of the Chinese national team, he withdrew from all international events until the Tokyo Olympics due to pandemic concerns.

[8] Xu played in the China National Qualification event in March and the Chinese Olympic Scrimmage in May, where he lost to several lesser known and lower ranked players.

[10] Xu reached the finals of the second leg of the Chinese Olympic Scrimmage, where he lost 4–3 to Fan Zhendong despite holding an 8-4 and 3–1 lead.

[11] In July, Liu Shiwen and Xu Xin won silver in the mixed doubles event at the Tokyo Olympics being upset 4-3 by Japan's Mima Ito and Jun Mizutani despite initially leading 2–0.

After his round of 16 win over Zhou Yu, Xu noted that he had recently been investing more of himself into his family rather than purely table tennis.

In the men's team group stage competition, Shanghai, which has Xu Xin, Zhao Zihao, Zhou Kai, and Fan Zhendong, defeated Guangxi 3-0 and got a good start.

[15] On October 12, 2024, after more than a year's absence, Xu Xin appeared as a seeded player in the 2024 National Table Tennis Championships and won two matches in a row.

[On October 13, 2024, Xu Xin withdrew from the Men's Singles Quarterfinals of the 2024 National Table Tennis Championships due to injury.

[On October 17, 2024, Xu Xin made his men's team debut at the National Table Tennis Championships with a victory over Jilin in the second stage of the tournament.

Senior career highlights, as of April 2018:[17] Summary of Accomplishments Xu Xin married table tennis player Yao Yan in 2016.