The invention discloses a portable industrial robot monitoring device based on a ZigBee technology, and relates to the technical field of a monitoring device for an industrial robot. The portable industrial robot monitoring device comprises a monitoring device body; the monitoring device body is of a tower-type structure; the monitoring device body is provided with three layers; a power supply anda voltage boosting and reduction module are arranged on the bottom layer; sensors are arranged on the middle layer; a processing module is arranged on the top layer; and a transmission module is arranged at the top of the monitoring device body. According to the robot monitoring device designing the tower-type structure, which is disclosed by the invention, various types of sensors can be freelyconfigured, monitoring capacity is comprehensive, and quality of a machined product is ensured; a buckling structure is arranged at the bottom of the monitoring device, so that the portable industrialrobot monitoring device is convenient to disassemble, and is disassembled or monitors other positions after determining that the robot can stably work, and thus, the monitoring device is high in utilization rate and saves cost.