In 2000, Kim Hyoyeon participated in the Korean SM Entertainment Co., Ltd. audition in Seoul, South Korea and became a trainee under the company.
From March to August 2004, Jin Xiaoyuan went to the International Student Department of the Second Affiliated Middle School of Beijing Normal University in China to study Chinese courses.
In August 2007, Kim Hyoyeon officially debuted as a member of the singing group Girls' Generation; on August 6, he participated in the radio program "Kiss The Radio" for the first time; on August 10, he held Japan's first autograph session ; On November 1, the first album of the same name "Girls' Generation" was officially released; on November 10, he participated in the OST production of the SBS TV series "30,000 Miles" and sang "Touch The Sky"; on December 6, Girls' Generation Participated in the 9th China-Korea Song Festival and came to Beijing for the first time.
On January 9, 2008, "Kissing You" was released; on January 16, he participated in the OST production of "Hong Gil Dong"; on January 16, he served as the ambassador of the Korean Girl Scouts; on March 13, Released "BabyBaby" and returned to the CB stage; on April 22, released an album of "Girls' Generation" in Thailand; on October 26, participated in the 10th China-Korea Song Contest.
On January 2, 2009, the "Gee" MV trailer was released; on June 19, the "Genie" MV trailer was released. On June 29, "Genie" was officially released; on July 3, "Genie" sold 40,000 copies in the first week; on December 19 and 20, the first solo concert was held and an Asian tour was launched; 12 On the 19th, the group’s first solo concert was held at the Seoul Olympic Park Fencing Arena.
On January 23, 2010, the trailer for the second album "Oh!" was released; on January 28, the second album "Oh!" officially entered the market; on April 17, Girls' Generation Asia Tour The first stop of the concert will be in Shanghai; the first concert of the "SM TOWN LIVE-10 world tour" concert in Seoul will be held on August 21; and the first "Showcase" will be held at the Ariake Coliseum in Tokyo, Japan on August 25 "; On September 8, Japan's first single "Genie" was released; On October 16, the second stop of Girls' Generation's Asian Tour Concert was held at the Taipei Arena; on October 20, Japan's second single "Genie" was released The single "Gee" ranked second on the ORICON Daily Singles Chart on the day of its release; on November 7, with the song "Hoot", it topped the KBS 2 music program "Music Bank" in the first week of November in South Korea. Top pop music chart; on December 6, Korean singers such as Girls’ Generation, KARA, C.N.BLUE and Shinee and Chinese singers such as Sun Nan, Han Hong, Hit-5 took to the stage to participate in the event hosted by Korean Broadcasting Television (KBS) and China Central Television (CCTV) The "12th Korea-China Concert" jointly organized by *** was held at the KBS Studio in Yeouido, Seoul on the afternoon of the 2nd.
In October 2011, Kim Hyoyeon participated in the filming of the Korean KBS2 TV variety show "Invincible Youth 2" as a guest. The program was broadcast on November 12.
In October 2012, South Korea's SM Entertainment Co., Ltd. launched the temporary group Younique Unit. Kim Hyoyeon formed the group with artists from the same company, Lee Hyuk Jae, Liu Xianhua, Lee Taemin, Kim Jong In and Lu Han, and it was released on October 31 The song "Maxstep".
In 2013, Kim Hyoyeon participated in the dance program "Dancing 9" and served as a mentor.
On July 28, 2014, Kim Hyo-yeon attended the South Korea-China Friendship Association’s Sichuan Governor’s visit to South Korea as a guest.
In May 2015, Kim Hyoyeon launched his first personal reality program "Hyoyeon's Million Likes"; in June of the same year, he launched his personal book "HYOSTYLE"; on July 1 of the same year, in Seoul Held the publication commemoration party and readers' meeting "HYO's Day".
On January 16, 2016, she served as the special host of the beauty program "Get it Beauty" and introduced beauty secrets to the audience through the program.