Dragon fruit is alkaline.

Common "acidic foods" include: protein foods, such as livestock, poultry, eggs, fish, shellfish, cheese, peanut butter, and peanuts; high-fat foods, such as bacon, walnuts, sesame seeds, Salad dressings; high carbohydrates, including corn bran, oats, macaroni, rice bran, rye, wheat; jelly desserts, puddings, etc.

Common "alkaline foods" include: vegetables, all types, especially beets, kale, leeks, mustard greens, radishes, spinach; fruits, all types, especially dates, figs, Bananas, dried apricots, apples, prunes, raisins; spices/herbs, all types, especially mint, basil, coriander, curry powder, parsley.

Common "neutral foods" include: butter, margarine, oils, corn, honey, and tea.

Extended information:

Dragon fruit is a tropical fruit, so it is best to buy it and eat it now. At low temperatures of 5℃-9℃, freshly picked dragon fruit can be stored for more than one month without being squeezed or bumped. At room temperature of 25℃-30℃, the shelf life can be more than 2 weeks.

Dragon fruit not only tastes sweet, but also has high nutritional value. It combines the advantages of fruits, flower buds, vegetables, and medicine. Not only is it rich in nutrients and has unique functions, it has few pests and diseases, and can grow normally without using almost any pesticides. Therefore, dragon fruit is a green, environmentally friendly fruit and a health nutritious food with certain curative effects.

Reference: People's Daily Online - Food is indeed divided into acid and alkali. Fish, meat and eggs are acidic, fruits and vegetables are alkaline