The utility model discloses a detection apparatus for stem and fuse post assembling, it includes the driving piece, receives the driving piece drive is carried out the backup pad of up -and -down motion and is located the barrier plate of backup pad top, be provided with the opening on surface about having a perfect understanding in the backup pad, the level is provided with an elasticity rope inthe vertical space of opening, the size of opening is greater than the length of fuse, elasticity rope to set up the direction perpendicular with fuse place direction. The utility model discloses an ingenious elasticity of utilizing is restricted to driving its up -and -down motion, having formed the flexible upwards effort of jack -up of one to the fuse, judging that whether the fuse, can not produced the fuse and damage in firm by the parcel, thereby timely, effectually detect out stem and the insecure problem of fuse equipment, so that adjustment in time, it is bad to prevent that the subsequent handling from appearing, reduces extravagantly.