The invention discloses a student desk and chair, which comprises support columns. The student desk and chair is characterized in that a first desk plate and a second desk plate are sequentially arranged on the each support column from top to bottom, each first desk plate is arranged on the corresponding support column through a first shaft, a slide rail is arranged on each support column, a slide block is arranged on each slide rail, a second shaft is hinged to each slide block, each second desk plate is arranged on the corresponding second shaft, a triangular bracket is arranged on each second desk plate, one end of each triangular bracket is fixedly connected with the corresponding second desk plate, the other end of each triangular bracket is movably arranged on the corresponding support column, each first desk plate is hinged to a first connecting rod, each first connecting rod and a second connecting rod are respectively hinged to the corresponding second shaft, a third connecting rod is hinged to each second connecting rod, and a limiting block is arranged on each second desk plate. The student desk and chair has the advantages that a front desk and chair and a back desk and chair can be mutually switched, and the face-to-face cooperation, discussion and studying effects of students are realized.