The invention provides a detection device for the instrument of fracturing equipment. The device comprises a power supply, a fracturing equipment instrument, a cable adapter, an analog signal acquisition module, a high-speed controller and an input/output unit. The fracturing equipment instrument, the cable adapter, the analog signal acquisition module, the high-speed controller and the input/output unit are electrically coupled to the power supply respectively. The analog signal acquisition module acquires the current signal or the voltage signal of the fracturing equipment instrument via the cable adapter, and then transmits the acquired current signal or the acquired voltage signal to the high-speed controller for analysis and detection. The detection result of the high-speed controller is transmitted to the input/output unit to be stored. By means of the detection device for the instrument of the fracturing equipment, the detection and the calibration on the instrument of the fracturing equipment can be conveniently conducted at a construction site. Therefore, the workload is reduced and the working efficiency is improved. Meanwhile, the working stability and the working accuracy of the instrument system of the fracturing equipment at the fracturing construction site are effectively improved. The fracturing construction quality is improved. At the same time, the device is small in size and light in weight, thus being convenient to carry about and use at the site.