I want to work in a publishing house when I grow up. What major should I apply for?

It depends on what you like and what you are interested in.

There are many professionals recruited by publishing houses, such as those who produce literary books, those who produce ancient prose, those who study foreign languages by FLTRP, those who study economic management, those who study scientific electrification by Electronic Industry Publishing House and People's Posts and Telecommunications Publishing House, those who publish psychological books need to recruit psychological professionals, and those who publish children's books need to study preschool education, pedagogy, children's literature and so on.

There is a major that specializes in cheating called "editing and publishing major". It's nothing to study for a few years, and all editing positions are despised. This is from experience. I hope the landlord will think twice.