His stage name is a combination of the Chinese reading of hanja characters 秀 (xiù), which means great or show, and 珉 (mín) which is part of his birth name.

In 2013, Xiumin made a guest appearance alongside actress Kim Yoo-jung in the music video for the song "Gone" by South Korean singer Jin, now a member of Lovelyz.

[8] In October 2015, Xiumin played the leading role opposite actress Kim So-eun in the web drama Falling for Challenge.

[11] In February 2016, Xiumin was featured in AOA member Jimin's solo single "Call You Bae", and appeared in its music video.

[12] In July 2016, he made his big screen debut alongside Yoo Seung-ho in the South Korean film Seondal: The Man Who Sells the River.

[13] In August 2016, he collaborated with fellow Exo members Chen, and Baekhyun on an original soundtrack titled "For You" for the television series Moon Lovers: Scarlet Heart Ryeo.

[21] In August 2019, it was reported that Xiumin would be starring in an army musical titled "Return: The Promise of That Day" together with Shinee member Onew and Yoon Ji-sung, which ran from October 22 to December 1 at the Olympic Park's Woori Art Hall in Seoul.

[29] On June 1, 2023, it was announced that Xiumin, Chen and Baekhyun had ended their contracts with SM Entertainment on the grounds of overdue payment and unreasonable deals.