520 points. Correspondence undergraduate course refers to the correspondence undergraduate education held by ordinary colleges and adult colleges, and the form of study at school is correspondence. According to the relevant information of the school, in 2022, the undergraduate correspondence score of Yunnan Agricultural University must be 520 points to enter the school. Correspondence education is a kind of adult college entrance examination education, which mainly refers to the learning mode that schools mail textbooks to students and students mail homework and test papers to schools.