Reserve teams in the Spain play in the same football pyramid as their senior team rather than a separate league. However, reserve teams cannot play in the same division as their senior team. Therefore, the team is ineligible for promotion to the division in which the first team competes. Reserve teams are also no longer permitted to enter the Copa del Rey.
The team is officially known as Atlético Malagueño on the club's official promotion and website, but Professional Football League rules prohibit B teams from having different names to their parent.
The club was originally founded in 1990 as Sociedad Deportiva Malacitana, the reserve team of Club Atlético Malagueño. When the latter became Málaga CF in 1994, it changed its name to Málaga CF B the following year.
The B-team followed the first one as it moved up the different divisions and, at the end of 2002–03 was promoted to the second division where it would last three seasons, returning to the fourth level in 2007.