The utility model relates to a clamping apparatus for testing a radar TR (temperature recorder) assembly. The clamping apparatus comprises an installing base (1), four groups of assembly pressing devices (2) and an adapted connector inserting-pulling mechanism (3), wherein the installing base (1) comprises a clamping apparatus base plate (101), a centrifugal fan (102), a straight tooth radiator (103) and an installation positioning board (104), and the straight tooth radiator is installed on the clamping apparatus base plate; the centrifugal fan is installed on one side of the straight tooth radiator positioned on the clamping apparatus base board, and the installation positioning board is installed on the straight tooth radiator; and the four groups of assembly pressing devices are installed on two sides of the installation positioning board on the installing base, and the adapted connector inserting-pulling mechanism is installed on the clamping apparatus base plate in the installing base. According to the clamping apparatus provided by the utility model, a bearing ball screw rod pair drives an assembly adapted connector to do an axial motion along a bearing ball screw rod, the connection and the separation of the assembly adapted connector and the assembly are realized, and the problem that the assembly adapted connector cannot be inserted and pulled by manpower due to strong connecting binding force of the adapted connector and the assembly is solved.