"Twenty Years at Hull House: With Autobiographical Notes" is an impressive book by the famous American activist Jane Addams. In this work, the author talks about her stay at Hull House, the first social service center in the United States, which she founded in Chicago. The book offers readers a deep dive into the problems of the poor and migrants of the early 20th century, and also reveals details of work and life at Hull House. "Twenty Years at Hull House" is not only a testament to the difficult work of an activist, but also an important document of American social history.