A personal medical product design method based on an audio port includes steps of: using a universal mobile terminal and a vital sign collecting apparatus, using the mobile terminal for supplying a power for a collecting apparatus and driving the collecting apparatus to collect a vital sign signal, and then receiving the vital sign signal and performing subsequent processing additionally mounting a physical hardware with a standard audio port on the collecting apparatus, and respectively connecting a data signal output terminal, a control signal input terminal and a power input terminal of the collecting apparatus to wire connecting terminals of the standard audio port achieving a power supply from the mobile terminal to the collecting apparatus because a power of an audio signal outputted by the mobile terminal meets operating power requirements of the collecting apparatus and physically connecting the collecting apparatus to the mobile terminal by the standard audio port, wherein a left sound channel signal transmission line, a right sound channel signal transmission line and a microphone signal transmission line of the audio port are respectively adapted for undertaking a power supply transmission and a signal transmission.
