The present invention discloses a float touching fall alert bath mat system, wherein a power management module is installed in a body, the power management module is electrically connected to a single chip microcomputer (SCM) and a sensor, a front end of the sensor is equipped with floating touch sensor chips in sheet structure, the floating touch sensor chips are configured around the body, and the power management module is electrically connected to a wireless communication module; the SCM conducts calculation according to the real-time position information to obtain a size and a shape of a contact area between a human body and a bath mat, a reaction time of contact change and a movement direction of the human body; the system can accurately detect whether an actual fall has occurred. The present invention has the advantages of small size and low power consumption. With a big monitoring area, it conducts highly accurate monitoring covering the size and the shape of the contact area, the reaction time of contact change and the movement direction of human body. It can accurately judge whether the user has fell and his falling direction, and can predict a possible injured position to provide assistance for rescue.