The cold climate on the grasslands has led Mongolians to form the habit of drinking milk tea. It is not only convenient to supply, but also can increase calories to resist the severe cold. From the perspective of food processing methods, in summer and autumn, people cut excess meat into thin strips, sprinkle it with salt, and dry it in a ventilated place to make air-dried meat or process it into meat floss. After drying, these raw meats not only reduce the size of It is small in size and does not deteriorate easily, making it easy to carry and store. People would separate endless amounts of cow's or goat's milk into milk and oil. Milk is processed into dried milk, milk tofu, cheese and other dried foods. The oil is boiled into butter, poured into a skin bag made of cow or sheep stomach, and then allowed to solidify and dry in a ventilated place for easy portability. Herdsmen "live by water and grass" and have no fixed abode. This lifestyle requires them to minimize the items that are inconvenient to carry. For food, they use dry methods to make it easy to carry. When the pastures wither in winter and spring, people can take out the air-dried meat, dried milk, milk tofu, cheese and other dried foods for later use. After all, Mongolian food is adapted to the cold climate and vast unobstructed geographical environment of Inner Mongolia. The nomadic production and lifestyle have created these unique food cultures. (4) The influence of natural geographical environment on Mongolian folk songs. Inner Mongolia is the "ocean of songs". Mongolians, regardless of gender, old or young, love to sing. They respect singers and people who are good at singing. Mongolian folk songs are famous for their grand and majestic sounds, high-pitched and melodious tunes, and wide range of sounds. This is because the vast grasslands are sparsely populated. During the long-term adaptation to the environment, people have developed the habit of speaking loudly and singing in particularly high ranges and pitches. Mongolian folk songs are very rich in content. Some describe love and marriage, some praise the grassland, horses, camels, cattle and sheep, blue sky, white clouds, rivers, lakes, and some praise the heroes of the grassland. The lyrics are mostly descriptive. The living environment and customs of the Mongolian people are the main focus. In terms of musical characteristics, Mongolian folk songs can be roughly divided into two categories: "long tune" and "short tune". The characteristics of long-key music are high pitch, wide range, long breath, ups and downs of melody, grand momentum or desolation. This is fully adapted to the natural geographical environment of the northern grassland. Mongolian herdsmen live by water and grass, grazing on the move. On the vast grasslands, the herdsmen have a broad vision, a broad mind, and a surge of emotions. This leisurely and comfortable nomadic production method allows the herdsmen to express their emotions and sing unrestrainedly, creating a long, stretching and rhythmic The formation of free long-key folk songs provides spatial conditions and time conditions. From a geographical distribution point of view, Changdiao is mainly distributed in the grassland pastoral areas north of the Daxingan Mountains and Yinshan Mountains in the Inner Mongolia Autonomous Region where the Mongolian people are still engaged in traditional animal husbandry production and live a mobile nomadic life. Generally speaking, songs with short melody and fast rhythm, which are different from long-key folk songs, are collectively called short-key folk songs. What is obviously different from long-tuned folk songs is that short-tuned tunes are generally two lines, two or four sentences in rhyme, with neat rhythm, compact structure, fewer decorative sounds, and little fluctuation in melody. The lyrics are simple, but not dull, with a distinct recitative feature. Short-key folk songs are mainly popular in semi-agricultural and semi-pastoral areas where Mongols and Han people live together and in eastern agricultural areas. The emergence of any culture is inseparable from a specific geographical environment. Everything about the Mongolian people has a close relationship with the grassland environment. The process of survival and reproduction of Mongolian folk customs is the process of continuous adaptation and utilization of the natural geographical environment. The natural geographical environment plays an important role in its formation, development and evolution.