The current campaign has seen the club appoint a fifth manager since the 2014-15 season in Carvalhal, after Paul Clement was appointed in place of American Bob Bradley midway through last season.
"Already last year they were struggling after the first half of the season, they were bottom," Laudrup told Omnisport. "They changed the coach, Paul Clement came, they had a fantastic second half of the season and they stayed up.
"First half of this season and exactly the same. Bottom and they sacked the coach and brought in another coach. You can say that not much has changed and they are back there again, so it's more a question of why is it happening repeatedly.
"The problem is, if it's happening two or three times and you're down there, one day you risk being relegated."
Swansea currently sit bottom of the Premier League table, four points adrift of safety.