The invention relates to the field of building door and window production, in particular to a detection device used for a handle repeated starting-closing test for a transmission mechanism. The detection device comprises a positively and negatively rotating service motor which drives a poking block to rotate back and force through a hollow driven shaft. The poking block clamps a handle to drive the handle to rotate together. Two friction blocks upwards protrude from the lower part of the handle through cylinders. According to the invention, the positively and negatively rotating service motordrives the poking plate to drive the handle to rotate, so the rotation angle can be freely set; the handle suffers from resisting force from the two friction blocks in the rotation process, so the actual operation process can be completely simulated through the starting and closing test of the handle; and under the functions of weights, axial testing is performed on the handle, so two objectives are achieved in one step, the detection device is highly targeted and the reliability of test results is high.