Jig for measuring voltage of PCB (printed circuit board)

The invention discloses a jig for measuring voltage of a PCB (printed circuit board). The jig comprises a plurality of voltmeters, detecting feeler pins, a bottom box, a support plate, a pin plate, a clamping hand and a support, the bottom box, the support plate, the pin plate and the clamping hand are sequentially arranged from bottom to top, the support is arranged at the rear of the bottom box and used for fixing the clamping hand, the pin plate is fixedly connected with an end of the clamping hand, arrayed mounting holes with internal threads are arranged on the pin plate, external threads are formed on the detecting feeler pins, and the feeler pins are fixed into the fixing holes in a screwed manner. The jig has the advantages that the arrayed mounting holes used for mounting the detecting feeler pins are arranged on the pin plate, the positions of the feeler pins on the pin plate can be adjusted by operators according to different PCBs at any time, the jig and even the pin plate do not need to be replaced, the application range of the jig is greatly expanded, cost is lowered, and optimization of resources is facilitated. In addition, the detecting feeler pins with the external threads are fixed into the mounting holes with the internal threads in the screwed manner, pin planting speed is high, and operation is simple. Besides, the voltmeters work simultaneously, confusion of data is reduced, and work efficiency is improved.