The utility model relates to the field of fittings of oil exploring devices, in particular to an injection-exploring integral special hollow rod coupling, which is adaptable to thermal-production oil production wells of a matched injection-exploring integral pump. The technical scheme includes that a coupling main body is provided with inner screw threads (female button), outer screw threads (male button) and a sealing groove, and a sealing retainer ring with the same specification of the bore with the outer end surface of the coupling is forged on the connection outer end surface of the inner screw threads of the coupling. The thickness of the sealing retainer ring is 0.5mm-10mm. The injection-exploring integral special hollow rod coupling has the advantages that when pipe columns are matched and connected, the hollow rod column needs to be further connected after firstly a red copper sealing pad is sleeved on the male button, thereby the injection-exploring integral special hollow rod coupling not only saves labor time, but also lightens labor intensity, and simultaneously, lowers damage probability caused by human operation. The injection-exploring integral special hollow rod coupling simultaneously has simple structure, easy processing and convenient operation.