A terminal device (100) includes an abnormality determination unit (111), a recording process unit (112), and a display control unit (113). The display control unit (113) displays an indication screen for indicating observation positions on which a stethoscope (30) is to be placed to an operator (U) of the stethoscope (30) on a display unit (104). The recording process unit (112) performs a biological sound observation process for recording on a storage unit (103) by associating positional information that shows observation positions with biological sound information that is output from the stethoscope 30. The abnormality determination unit (111) determines whether or not the biological sound information is an abnormality candidate. The display control unit (113) displays the indication screen such that the biological sound observation process is executed at least twice for each of observation positions of biological sound information that are determined to be an abnormality candidate, and bilateral positions, which have a bilaterally symmetrical relationship with respect to the observation positions.
