A pin push inspection connector comprising: a first connector assembly having a front portion configured to be connected to a connector under test in a first direction and to be fixedly coupled to the connector under test; and a second connector assembly having a front portion connected to a rear portion of the first connector assembly in the first direction and provided so that a connection interval with respect to the first connector assembly is variably adjustable in the first direction or a second direction that is opposite to the first direction, wherein the second connector assembly comprises at least one inspection pin provided therein to be connected to at least one terminal pin provided in the connector under test, characterized in that the first connector assembly comprises a first fastening hole extending in the first direction from a rear end portion of the first connector assembly, and the second connector assembly comprises a length adjusting bolt passing through a body and screwed into the first fastening hole to a certain depth, and wherein the second connector assembly further comprises a second fastening hole extending in the first direction and having a thread formed on an inner circumferential surface thereof, and a length fixing bolt screwed into the second fastening hole and provided to support the rear end portion of the first connector assembly, wherein the first connector assembly comprises a first housing comprising a first main body formed in a hollow structure and a first wing body integrally formed on both sides of the first main body, and a guide pin extending from the first wing body in the first direction beyond the first main body, wherein the length fixing bolt is provided so that a front end portion of the length fixing bolt supports a rear end of the guide pin located on the first wing body. a first connector assembly having a front portion configured to be connected to a connector under test in a first direction and to be fixedly coupled to the connector under test; and a second connector assembly having a front portion connected to a rear portion of the first connector assembly in the first direction and provided so that a connection interval with respect to the first connector assembly is variably adjustable in the first direction or a second direction that is opposite to the first direction, wherein the second connector assembly comprises at least one inspection pin provided therein to be connected to at least one terminal pin provided in the connector under test, characterized in that the first connector assembly comprises a first fastening hole extending in the first direction from a rear end portion of the first connector assembly, and the second connector assembly comprises a length adjusting bolt passing through a body and screwed into the first fastening hole to a certain depth, and wherein the second connector assembly further comprises a second fastening hole extending in the first direction and having a thread formed on an inner circumferential surface thereof, and a length fixing bolt screwed into the second fastening hole and provided to support the rear end portion of the first connector assembly, wherein the first connector assembly comprises a first housing comprising a first main body formed in a hollow structure and a first wing body integrally formed on both sides of the first main body, and a guide pin extending from the first wing body in the first direction beyond the first main body, wherein the length fixing bolt is provided so that a front end portion of the length fixing bolt supports a rear end of the guide pin located on the first wing body.