At present, there is no research result and scientific basis to prove that milk and honey will produce toxic substances together, and the substances contained in them are also incompatible with each other. So milk and honey can be eaten together, and milk can also be drunk with honey. But it must be noted that the nutrients and flavor of honey will be destroyed by high temperature, so honey should not be cooked with milk, but should be added when the milk is warm.

Extended data:

There are at least 100 kinds of nutrients in milk, and the main ingredients are water, fat, phospholipids, protein, lactose and inorganic salts.

The main components of honey are fructose and glucose, and a small amount of sucrose, maltose, dextrin, gum, nitrogen-containing compounds, organic acids, volatile oil, pigments, waxes, natural spices, plant fragments, yeast, enzymes, inorganic salts and so on. Minerals are mainly magnesium, calcium, potassium, sodium, sulfur, phosphorus and trace elements such as iron, copper, manganese and nickel. Fructose and glucose are nutritious and easily absorbed by human body.

References:

People's Daily Online: Can I add honey to milk?