The invention discloses a portable porcelain column insulator stress detection device comprising a digital pulling force sensor device and a handheld data acquisition device. The digital pulling force sensor device comprises a plurality of data acquisition channels, which are independent from each other. Each of the data acquisition channels comprises a lateral pressure type pulling force sensor, a signal amplifying conditioning circuit, and a digital interface module. The lateral pressure type pulling force sensors, the signal amplifying conditioning circuits, and the digital interface modules are sequentially connected together. The handheld data acquisition device comprises an RS485 interface, a MCU module, and a display module. The RS485 interface is connected with the digital interface module, and the RS485 module, the MCU module, and the display module are connected together. The portable porcelain column insulator stress detection device can be used to detect the pulling force of the porcelain column insulator lead effectively, and can be used to determine whether the stress state of the insulator is qualified, and has advantages of wide application range, high measurement precision, and convenient operation.