In a liquid ejection control apparatus, an operation unit includes an adjustment lever that is used to input an indication value of momentum or kinetic energy related to a pulsed liquid jet ejected from a liquid ejection device. A control unit includes a frequency setting portion that sets a rising frequency of a drive voltage waveform applied to a piezoelectric element and an amplitude setting portion that sets the amplitude of the drive voltage waveform, so that momentum or kinetic energy has an indication value.
