Introduction to the Botanical Museum: The Botanical Museum is built on the basis of the herbarium of the Northwest Institute of Botany of Northwest Agricultural and Forestry University. It has a collection of approximately 550,000 plant specimens collected from northwest, northern and southwest my country since the 1920s. Yufen is one of the herbaria with the richest collections in my country. It is also the herbarium with the most comprehensive collection, the largest scale and the longest history of establishment in northwest my country.