A cardiopulmonary resuscitation support device including: a pressure sensing part configured to overlap a chest and including a flexible dielectric layer formed of an elastomer, and a flexible first and second electrodes formed of a conductive elastomer overlapped on two surfaces of the dielectric layer； a detection part provided at a facing part of the two electrodes to detect changes in electrostatic capacity； a power supply device to apply measurement voltage and a detection member to obtain the electrostatic capacity detected by the detection part connected to the electrodes； a processing member to calculate at least one piece of evaluation information among a number of compressions, a number of compressions per unit time, a pressing depth during compression, a pressing depth during release, and a ratio of a compression time, based on a detection value from the detection member.
