The invention relates to a probe special for performing
eddy current testing on a thimble tube of a
neutron flux instrument used by a
nuclear power plant. The probe is used for performing
eddy current testing on the thimble tube of the
neutron flux instrument used by the
nuclear power plant, and comprises a seeker, a
copper bush having one end connected with the seeker, a coil framework arranged in the
copper bush, a coil wound on the coil framework, and a spring tube connected with the other end of the
copper bush, wherein the coil is connected with a cable; a steel
wire rope is fixedly connected with the coil framework; the cable and the steel
wire rope are fixed by a cable clamp and penetrate the copper bush and the spring tube; an empty slot part is formed in the wall of the copper bush and is filled with glue; the
tail part of the steel
wire rope is fixedly connected with the
tail part of the spring tube; and the
tail part of the cable is connected with a connector. According to the probe special for performing
eddy current testing on the thimble tube of the
neutron flux instrument used by the
nuclear power plant, the enough thrust can be supplied in a narrow and slender curved channel, the durability is extremely strong, and the in-service
eddy current testing on the thimble tube of the
nuclear power plant can be realized safely and reliably.