The invention discloses a multifunctional digital helium pump magnetometer test probe, which comprises a radio frequency detection module, a high-voltage excitation detection module, an ultra high speed ADC, a communication interface, an FPGA+DSP module, a DAC module, an input key and a display. A high speed bandpass filter and an amplitude detector with center frequencies adjustable in real timeare adopted to simulate demodulation on Larmor frequency modulation signals by the helium pump probe and generation of magnetic resonance signals. The multifunctional digital helium pump magnetometertest probe has the beneficial effects that the bandpass filter and the amplitude detector with center frequencies adjustable in real time are adopted to simulate demodulation on Larmor frequency modulation signals by the helium pump probe and generation of magnetic resonance signals, apart from simulation on electrical signals of the pump probe, more importantly, a magnetic field frequency point and a specially-preset magnetic field curve can be set manually or the actually-recorded magnetic field data are received through the communication interface and real-time playback is carried out, andfunctional performance test on software and hardware of the magnetometer host is completed; and the multifunctional digital helium pump magnetometer test probe has the advantages of strong anti-interference ability and convenient use and the like.