The invention discloses a probe moving mechanism, comprising a mandrel inserted into a flange cover, a handle is fixed on the mandrel, a long shaft is arranged in the center of the mandrel in a penetrating mode, a crank is fixed on the long shaft, and a support is arranged on the outer side of the long shaft; the top of the support is connected with a convex dovetail groove, the bottom of the support is connected with the upper surface of the mandrel, and the side surface of the support is connected with a short shaft; a pair of meshed bevel gears is fixed on one side of the short shaft and atthe top of the long shaft; a screw rod is arranged above the convex dovetail groove, one side of the screw rod and the other side of the short shaft are connected with a pair of meshed straight gears, and the screw rod penetrates through a concave dovetail groove; the concave dovetail groove is matched with the convex dovetail groove, and a probe is fixed at the top of the concave dovetail groove. The probe moving mechanism in the invention is simple in overall structure and convenient to operate; the crank and the handle are rotated so that radial and circumferential adjustment of the probecan be completed outside a cabin body, and further, the flow intensity of any point in the plane is measured; and a pointer is matched with a dial so that the adjustment of the probe is more accurateand the experimental data is more accurate.