The invention provides an integrated controllable partial discharge instrument pulse signal generator comprising a programmable voltage waveform generator S, a D/A signal converter T, a digital switch module D, the programmable voltage waveform generator S and a standard capacitor module C. One end of the programmable voltage waveform generator is connected with 220V power frequency alternating current, and the other end is connected with the D/A signal converter and then connected with the digital switch module and the standard capacitor module in turn so that the generated programmable step voltage signals are converted into controllable partial discharge instrument pulse signals. Programmable step voltage waveform is generated by the programmable voltage waveform generator S. The D/A signal converter T is used for converting digital signals generated by the waveform generator into analog signals. The digital switch module D is used for selecting switching and on/off of the capacitor. The step voltage signals generated by the voltage waveform generator are converted into the controllable partial discharge instrument pulse signals by the standard capacitor module C. The integrated controllable partial discharge instrument pulse signal generator has advantages of being high in accuracy, simple in realization principle and high in anti-interference capability.