Drill rod connector

The utility model provides a drill rod connector. The drill rod connector comprises a first drill rod segment, a connector nut, retaining devices and a second drill rod segment, wherein the first drill rod segment is arranged at the upper part of the second drill rod segment through the connector nut, the connector nut is arranged at the middle position of the first and second drill rod segments, the retaining devices are arranged on the connector nut, the second drill rod segment is arranged at the lower part position of the first drill rod segment through the connector nut, and the first drill rod segment comprises a pin-shaped end and a first drill rod segment lower part end. According to the drill rod connector, through arranging the second drill rod segment, sealing members and the retaining devices, the structure is simple, the machining is convenient, the prevention of leakage of pressure is facilitated, the sealing performance is improved, the turned turnoff of the connector nut is prevented, the flexibility and convenience of connection are improved, the strength of connection between a drill bit and a drill spindle is enhanced, the maintenance cost is further reduced, and the service life is prolonged.