Sucker rod and manufacturing method thereof

The invention provides a sucker rod and a manufacturing method thereof, and relates to the technical field of oil extraction equipment. The sucker rod comprises a rod body, a first joint and a secondjoint; a first rod head and a second rod head are arranged at the two ends of the rod body respectively, the first rod head is provided with a first outer sealing face and a first outer thread sectionin the axial direction, and the second rod head is provided with a second outer sealing face and a second outer thread section in the axial direction; a first inner sealing surface and a first innerthread section are arranged on the inner circumferential surface of the first joint, the first inner sealing surface is in sealing fit with the first outer sealing surface, and the first inner threadsection is in threaded connection with the first outer thread section; and a second inner sealing surface and a second inner thread section are arranged on the inner circumferential surface of the second joint, the second inner