In a liquid ejection control device, an ejection tube section type acquisition unit (651) discriminates an ejection tube section type of an ejection tube section (50) mounted in a main body section (40), and acquires a fitted correspondence relationship fitting the discriminated ejection tube section type. A voltage amplitude setting unit (654) sets a voltage amplitude of a drive voltage waveform so as to cause momentum to meet a momentum instruction value input by using a momentum dial (711) based on a rising index value related to rising of the drive voltage waveform and a repetitive frequency instruction value input by using a repetitive frequency dial (713) with reference to the fitted correspondence relationship.
