[Problem] Provided are a cardiac function measuring system which is capable of easily acquiring a cardiac function (cardiac state) of a patient without being connected to a special device even at an actual first-aid site in emergency, a remote place, or the like, and an extracorporeal circulator provided with a cardiac function measuring system. [Means for Resolution] There is provided a cardiac function measuring system 200 including a flowmeter 70 configured to measure a flow rate waveform of blood in extracorporeal circulation, a control unit 100 configured to acquire a pulsation waveform 62 (waveform 60) which is a flow rate fluctuation waveform of blood included in a flow rate waveform measured by the flowmeter 70, and a display unit 30 configured to display a pulsation waveform indicating a cardiac function of a human body in response to a command from the control unit 100.
