Since its beginnings, the club has recruited students from the Diocesan Boys' School to form the core of its squad.

[1] The club's first official match occurred on 6 September 2015 against fellow Hong Kong Third Division side, Sun International.

As a result, Hoi King finished as runners up in the Hong Kong Second Division and clinched their second successive promotion in as many years.

[3] On 24 May, despite an 8th-place finish in the First Division, the Hong Kong Football Association accepted Hoi King's application to join the HKPL for the 2018–19 season.

[5] In the 2022–23 season, Hoi King finished 2nd in the FA Cup Junior Division, after losing 2–1 to Central and Western District in the final.