A human body physiological signal collecting device (10) and a human body physiological signal collecting system. The human body physiological signal collecting device (10) comprises a flexible pad body (11) having a coarse surface, a piezoelectric thin-film sensor (12), a signal collecting processor (17), and a signal output interface (16). The flexible pad body (11) is provided with an interlayer. The piezoelectric thin-film sensor (12) is provided in the interlayer. The piezoelectric thin-film sensor (12) is connected to a signal collecting processor (17). The signal collecting processor (17) is connected to the signal output interface (16). The piezoelectric thin-film sensor (12) distends downward when pressed and generates a pull with parts outside of the point to which force is applied. Because of the self-locking action between coarse surfaces, the flexible pad body (11) has a slip-resistance effect, and a repeated pressure of small amplitude becomes a corresponding pulling force, thus an electric signal corresponding thereto is generated by the piezoelectric thin-film sensor (12), the electric signal is collected by the signal collecting processor (17) and processed into a human body physiological signal, and the human body physiological signal is outputted by the signal output interface (16). The human body physiological signal collecting system comprises a smart terminal (20) communicatively connected to the human body physiological signal collecting device (10).Linvention concerne un dispositif dacquisition de signaux physiologiques du corps humain (10) et un système dacquisition de signaux physiologiques du corps humain, le dispositif dacquisition de signaux physiologiques du corps humain (10) comprenant un corps souple (11) à surfaces rugueuses, un capteur à film piézo-électrique (12), un processeur dacquisition de signaux (17) et une interface de sortie de signaux (16). Linvention se particularise en ce que le corps souple (11) présente une couche inte
