The utility model relates to a blocking device for a meter verification assembly line robot. The blocking device comprises a human induction switch SW, a relay KS, an AC contactor KM and a bi-color indicating lamp LD. The beneficial effects of the blocking device are that: the blocking device can monitor workers in an area close to the meter verification assembly line robot; when a worker enters the area close to the robot, the power supply circuit of the robot turns off; and when the worker walks out of the area close to the robot, the power supply circuit of the robot turns on automatically and an alarm lamp indication is provided to make the worker observe. The blocking device provides a safety guarantee to workers entered into the area close to the meter verification assembly line robot.