The utility model discloses a multi-waveform electromagnetic field generator based on a HelmHolz coil, which comprises the components of: a power supply module, a signal generating module which is connected with the power supply module, a displaying control module, a power amplifier module and an electromagnetic field generating module. The multi-waveform electromagnetic field generator is characterized in that: the displaying control module controls the signal generating module through a man-machine interface and realizes displaying for an output signal from the power amplifier module through a liquid crystal screen; the signal generating module generates digital signals which comprise a sine wave, a triangular wave, a monopulse-waveform signal and a pulse-group-waveform signal, and outputs the generated digital signal to the power amplifier module for performing power amplification. The electromagnetic field generating module is a 3-HelmHolz coil and converts the signal which is output from the power amplifier module to an electromagnetic field with a corresponding waveform. The multi-waveform electromagnetic field generator provided by the utility model has advantages of: simple use, convenient operation, high economical performance, high practicability and wide application prospect in the biological effect researching field of the electromagnetic field.