The invention discloses a supersonic-speed wind tunnel test section regulating device with the angle adjustment function and belongs to the field of wind tunnel test device design. The device includes a frame, an elastic beam, a hinge shaft, a fixed adjusting piece, a transition adjusting piece, a rotating adjusting piece, an ejector rod, an arc-shaped guide rail, a roll ball screw rod module, a servo motor, a reducer, a pull wire sensor and the like. A rail body of the arc guide rail is installed on the transition adjusting piece fixedly connected with the frame, a slider of the arc-shaped guide rail is connected with the rotating adjusting piece, the ejector rod is driven by means of a linear motion mechanism composed of the servo motor, the speed reducer and the roll ball screw rod module to walk, the rotation of the adjusting pieces is achieved, and oblique shock waves with the continuously variable shock wave angle is generated. The device has the function of accurately adjusting a wind tunnel flow field, can be applied in shock wave reflection and continuously variable Maher number research projects, can also be applied in pressure measuring, air inlet channel measuring and other supersonic-speed wind tunnel special tests, and effectively expands the capacity of the wind tunnel test.