An ultrasound diagnostic apparatus includes an image memory, an operation unit, a measurement item designation receiving unit for receiving a designation of a measurement item, a detection measurement algorithm setting unit that sets a detection measurement algorithm, a frame designation receiving unit that receives a designation of a frame to be used for the measurement among a plurality of frames in the image memory, a measurement position designation receiving unit that receives a designation of a position of a measurement target on a first measurement frame received by the frame designation receiving unit, a measurement position setting unit that sets the position of the measurement target on a frame other than the first measurement frame, a measurement unit that detects the measurement target on the plurality of frames to calculate the measurement value, and a final measurement value calculation unit that calculates a final measurement value.