The middle school affiliated to Dayun University, which is called the middle school affiliated to Yunnan University, is the first private first-class complete middle school in Yunnan Province, founded in 1927. The school has four campuses: 12 1, Yao Xing, Chenggong and Xilin, with abundant teachers and complete hardware facilities. It has been rated as "National Characteristic School" and "Yunnan Civilized School". The middle school affiliated to Yunnan University (YUSS) is abbreviated as 1927, with a long history of 90 years. After the middle schools attached to Donglu University, National Yunnan University, Yunnan University Workers' and Peasants' Middle School and Dayun Workers' Children's Middle School, the current school name was restored on 1988.

The middle school affiliated to Yunnan University is a school with a glorious revolutionary tradition. As early as 1939, the school established the Party branch of China Dayun High School. Under the leadership of the Party, a large number of students embarked on the revolutionary road and became the backbone of Yunnan's anti-Japanese national salvation movement and patriotic democratic movement, with 3 1 teachers and students giving their young lives for the revolution. The high school attached to Dayun, Zhong Ling is outstanding, bringing together many famous teachers and cultivating a large number of national talents. They created the first generation attached middle school of Dayun, and inherited and accumulated the rich cultural accumulation of the school. With the strong support of governments at all levels and Yunnan University, under the care and guidance of provincial and municipal education authorities, and through the unremitting efforts of all the teachers and students, the secondary school affiliated to Dayun University has developed by leaps and bounds since it resumed school on 1982. It has become one of the schools with the highest quality of education and teaching, the fastest growth of students and the best social reputation in Yunnan Province in recent years. Junior high school education has maintained the first level of senior high school entrance examination in Kunming for 32 consecutive years, and later high school education has been in the forefront of high-quality high school education in Kunming.