A chair. Space chair is a kind of chair and a brand-new viewing experience. It comprises a seat plate, a backrest and a base. The base consists of two large brackets and an underframe. The four corners of the chassis are respectively fixedly connected with the corresponding ends of the two large brackets. There are two cross braces between the front ends of the horizontal sections of the two large brackets, and there is a small bracket and two swing rods outside the two large brackets, which is both for office and leisure and has a wide application range.