Eating bananas and milk together does not exist, but it is beneficial for the human body to supplement more nutrition.

Generally speaking, milk can't be eaten with acidic fruits. Bananas are weakly alkaline fruits, and there will be no adverse reactions when eaten together. Some people have adverse reactions such as diarrhea after eating both at the same time, which are mostly caused by improper or excessive consumption.

Milk contains calcium, iron, phosphorus, zinc, copper, manganese, molybdenum, minerals and other rich nutrients, and bananas also contain a variety of vitamins and trace elements. Eating milk and bananas at the same time can supplement many nutrients in human body, which is beneficial to human digestion and absorption.