An acoustic wave diagnostic apparatus, comprising: a display unit that displays an acquired acoustic wave image; an operation unit for a user to perform an input operation; a measurement item designation receiving unit that receives designation of a measurement item relevant to a measurement target from the user through the operation unit; a detection measurement algorithm setting unit that sets a detection measurement algorithm based on the measurement item received by the measurement item designation receiving unit; a position designation receiving unit that receives designation of a position of the measurement target on the acoustic wave image displayed on the display unit from the user through the operation unit; a measurement unit that detects the measurement target from the acoustic wave image based on the position of the measurement target received by the position designation receiving unit and the detection measurement algorithm set by the detection measurement algorithm setting unit, measures the detected measurement target, calculates a measurement candidate or a plurality of measurement candidates, and displays the measurement candidate or the plurality of measurement candidates on the display unit; and a measurement candidate designation receiving unit that receives designation of the measurement candidate from the user through the operation unit from the plurality of measurement candidates displayed on the display unit, wherein each measurement candidate includes at least one measurement line used for measurement, the at least one measurement line being displayed so as to be superimposed on the acoustic wave image; and wherein the measurement candidate or the measurement candidate received by the measurement candidate designation receiving unit is used as a measurement result. a display unit that displays an acquired acoustic wave image; an operation unit for a user to perform an input operation; a measurement item designation receiving unit that receives designation of a measurement item relevant to a measurement target from the user through the operation unit; a detection measurement algorithm setting unit that sets a detection measurement algorithm based on the measurement item received by the measurement item designation receiving unit; a position designation receiving unit that receives designation of a position of the measurement target on the acoustic wave image displayed on the display unit from the user through the operation unit; a measurement unit that detects the measurement target from the acoustic wave image based on the position of the measurement target received by the position designation receiving unit and the detection measurement algorithm set by the detection measurement algorithm setting unit, measures the detected measurement target, calculates a measurement candidate or a plurality of measurement candidates, and displays the measurement candidate or the plurality of measurement candidates on the display unit; and a measurement candidate designation receiving unit that receives designation of the measurement candidate from the user through the operation unit from the plurality of measurement candidates displayed on the display unit, wherein each measurement candidate includes at least one measurement line used for measurement, the at least one measurement line being displayed so as to be superimposed on the acoustic wave image; and wherein the measurement candidate or the measurement candidate received by the measurement candidate designation receiving unit is used as a measurement result.