The invention provides a human health monitoring device and system of automobiles. The device includes a steering wheel and a combined instrument; the steering wheel is provided with a sensor and a vibrator; the combined instrument is provided with a controller and a display; the sensor is used for collecting current human parameter information, and the current human parameter information includescurrent blood pressure and a current heart rate; the controller is used for comparing the current blood pressure with a normal blood pressure threshold value to obtain a first comparison result, comparing the current heart rate with a normal heart rate threshold value to obtain a second comparison result and controlling an automobile control system or the vibrator according to the first comparison result and the second comparison result; and the display is used for displaying the current blood pressure, the current heart rate, the first comparison result and the second comparison result. Theautomobile control system at least includes an ECU and a brake controller and can monitor the blood pressure and heart rate of a driver in real time, so that corresponding measures can be adopted in the case that the abnormity of the body of the driver occurs, and therefore, the safety of driving can be enhanced.