A jet parameter generation system configured to generate a predetermined jet parameter (Prj) to be used when generating a drive signal (Sd) which is applied to a jet section (41, 42) configured to jet liquid, and which has a single pulse or a plurality of pulses (Pa, Pb, Pc), the system comprising: a data acquisition section configured to obtain a selection instruction signal (Ss) input from an outside and a predetermined input parameter (Prin) as input data; and a parameter generation section configured to generate the predetermined jet parameter (Prj) based on the selection instruction signal and the predetermined input parameter, using a predetermined analytical method taking the predetermined input parameter as an explanatory variable and taking the predetermined jet parameter as an objective variable, wherein the parameter generation section configured to determine which one of a first standard and a second standard (Vj) is to be selected, based on the selection instruction signal representing which one of the first standard and the second standard is to be selected, a voltage value (Vp) representing a crest value of the pulse in the drive signal being set to a voltage value with which a drop volume of the liquid to be a reference is obtained based on the first standard, and being set to a voltage value with which an ejection speed of the liquid to be a reference is obtained based on the second standard, configured to select a first explanatory variable group included in the predetermined input parameter as the explanatory variable when determining that the first standard is to be selected, while selecting a second explanatory variable group included in the predetermined input parameter as the explanatory variable when determining that the second standard is to be selected, and configured to use the predetermined analytical method using just selected one of the first explanatory variable group and the second explanatory variable group to thereby generate the predetermined jet parameter (Prj). a data acquisition section configured to obtain a selection instruction signal (Ss) input from an outside and a predetermined input parameter (Prin) as input data; and a parameter generation section configured to generate the predetermined jet parameter (Prj) based on the selection instruction signal and the predetermined input parameter, using a predetermined analytical method taking the predetermined input parameter as an explanatory variable and taking the predetermined jet parameter as an objective variable, wherein the parameter generation section configured to determine which one of a first standard and a second standard (Vj) is to be selected, based on the selection instruction signal representing which one of the first standard and the second standard is to be selected, a voltage value (Vp) representing a crest value of the pulse in the drive signal being set to a voltage value with which a drop volume of the liquid to be a reference is obtained based on the first standard, and being set to a voltage value with which an ejection speed of the liquid to be a reference is obtained based on the second standard, configured to select a first explanatory variable group included in the predetermined input parameter as the explanatory variable when determining that the first standard is to be selected, while selecting a second explanatory variable group included in the predetermined input parameter as the explanatory variable when determining that the second standard is to be selected, and configured to use the predetermined analytical method using just selected one of the first explanatory variable group and the second explanatory variable group to thereby generate the predetermined jet parameter (Prj). configured to determine which one of a first standard and a second standard (Vj) is to be selected, based on the selection instruction signal representing which one of the first standard and the second standard is to be selected, a voltage value (Vp) representing a crest value of the pulse in the drive signal being set to a voltage value with which a drop volume of the liquid to be a reference is obtained based on the first standard, and being set to a voltage value with which an ejection speed of the liquid to be a reference is obtained based on the second standard, configured to select a first explanatory variable group included in the predetermined input parameter as the explanatory variable when determining that the first standard is to be selected, while selecting a second explanatory variable group included in the predetermined input parameter as the explanatory variable when determining that the second standard is to be selected, and configured to use the predetermined analytical method using just selected one of the first explanatory variable group and the second explanatory variable group to thereby generate the predetermined jet parameter (Prj).