The invention belongs to the technical field of flow field temperature testing, and discloses a temperature probe for reducing the support rod plugging effect through air suction of a support rod. Thetemperature probe is characterized by comprising a probe head, the support rod, an air suction pipe and receiving nozzles. The probe head is welded with the support rod and equipped with a built-in temperature sensor. The cable of the temperature sensor is packaged in the support rod and led out of the top end or the side surface of the support rod and closely packaged. The support rod has a closed structure and faces the coming flow, the shoulder part or the back part is provided with multiple columns of circular holes, and the holes are connected or communicated with the air suction pipe. The air suction pipe is connected with the receiving nozzles welded on the support rod. The receiving nozzles have a cylindrical structure and are welded on the surface of the support rod for sealing.The interference of the inserting probe on the tested flow field can be reduced by controlling the air suction quantity of the support rod. Compared with the present probes, the plugging effect causedby the wake of the probe support rod can be reduced by air suction of the circular holes on the surface of the support rod.