The invention provides a shock test device suitable for an expansion slot of a computer system. The shock test device includes a mainboard, a structure unit and a detection module. The mainboard has a connecting finger electrically connected to the expansion slot. The structure unit is disposed at the mainboard for simulating a weight and a supporting structure. The detection module is coupled to at least one pin of the connecting finger for detecting a touch condition between the connecting finger and the expansion slot so as to produce a warning signal. In this way, the shock test device can detect whether or not a link plug-in in a host computer (for example, the link between the expansion slot and the connecting finger portion of the shock test device) is disconnected due to shocking or unseen disconnected and then reconnected again.