The present invention relates to a stretchable pressure sensor array, comprising: a sensor sheet including an elastic body; a plurality of conductive pillars at least partially embedded in the sensor sheet and formed by aligning magnetic particles in a thickness direction of the sensor sheet; an upper electrode formed on the sensor sheet; and a lower electrode formed under the sensor sheet, wherein when pressure is applied from the upper or lower surface of the sensor sheet in the thickness direction, a conductive path is formed between the upper and lower electrodes and the conductive pillar so that current flows.