Linear displacement sensor's early troubleshooting test device belongs to the fault detection method field, and aim at solves that prior art exists can not carry out early fault inspection's problem to linear displacement sensor. The utility model discloses a trouble trigger device, wherein temperature and humidity testing case are two -layer about divideing into through the baffle, and the shaking table is located temperature and humidity testing case lower floor, and the up end stretches into the upper strata, and frequency -variable controller fixes at temperature and humidity testing case up end, lieing in temperature and humidity testing case upper strata and fixing the common environment mount table at the shaking table up end, the environment mount table includes that 2n sets up the common environment subelement that the structure is the same side by side altogether, and every is total to top slide that the environment subelement includes relative sliding fit and slide down, and two linear displacement sensor are along top slide length direction parallel arrangement at the top slide up end, with last skateboard connection who is total to the environment mount table and drive and the stroke regulating means who drives its reciprocating motion, measure the distance of reciprocal inferior scalar sum motion through motion detection mechanism.