The invention provides canned milk and corn soup and a making method thereof. The canned milk and corn soup is made from the following raw materials in parts by weight: 10-30 parts of corn, 20-30 parts of milk, 0.02-0.05 part of probiotics, 0.3-0.5 part of dietary alkali, 1-3 parts of a sweetening agent, 0.1-0.2 part of edible essence and the balance of pure water. The invention further discloses a preparation method of the canned milk and corn soup. A modern biological fermentation technique is adopted, so that a new corn food good in mouth feel, convenient to eat, and rich in nutrition is made. The kinds of corn and milk products are enriched, and the pursuit for diversity of corn eating methods by people is met.