Inspection jig applied to non-self-locking key switch

The utility model discloses an inspection jig applied to a non-self-locking key switch. The inspection jig comprises an inspection bench used for bearing a DC power supply, a contact jack group and an indicating lamp. The direct-current power supply is used for providing electric energy for the indicator lamp; the contact jack group consists of a positive jack and a negative jack and is used for plugging a positive contact and a negative contact of the non-self-locking key switch; the indicating lamp, the non-self-locking key switch inserted into the contact jack group and the current-limiting resistor form a series branch, and two ends of the series branch are respectively connected with the positive electrode and the negative electrode of the direct-current power supply. The utility model has the advantages that sound signals output by the universal meter are changed into optical signals, which is convenient for observation and judgment; meanwhile, contact type power supply is adopted, operation can be carr