Foot support structure of student chair

The utility model discloses a foot support structure of a student chair. The foot support structure comprises a foot support, a shaft rod and a telescopic structure, first rotary clamping pieces are arranged on the two sides of the foot support; the two ends of the shaft rod penetrate through the first rotating clamping pieces on the two sides to be connected with the telescopic structure in an inserted mode, and the shaft rod is detachably provided with a limiting column. A second rotary clamping piece corresponding to the first rotary clamping piece is independently arranged; the first rotary clamping piece and the second rotary clamping piece are covered to form a limiting cavity and a mounting channel; the foot support rotates relative to the shaft rod, the foot support is turned upwards to be opened or turned downwards to be retracted, and the limiting column limits rotation of the limiting cavity and controls the rotation range of the foot support. And the telescopic structure is provided with a mountin