The invention discloses normal-temperature beef soup and a preparation method thereof, relates to the technical field of beef soup preparation, and aims to solve the problems that when prepared beef soup is taken out, the soup is easy to sputter when the soup is taken out manually by a soup ladle, the sputter soup may cause scalding, and certain potential safety hazards exist. The method comprises the following steps: step 1, preparing water, beef, beef bones, meat cooking materials, seasonings and a freshener, crushing the beef, the beef bones, the meat cooking materials and the seasonings by virtue of a crusher of a preparation device, then adding the crushed beef, the crushed beef bones, the crushed meat cooking materials and water into a boiler of the preparation device, and heating the boiler by virtue of a heater for boiling; step 2, decocting with big fire for 2 hours, and adding the crushed seasonings into the soup; step 3, decocting for 5 hours with medium fire, adding a freshener into the soup, and stirring; and step 4, pouring out the boiled soup, and removing soup residues by virtue of a filter screen.