The invention discloses an electrical system of a active-safety guiding device capable of monitoring an emotion of a driver and a control method of the electrical system. An output signal of a temperature sensor is input to an I/O port of a MCU microcontroller; signals collected by a finger-sweating detecting module, a respiration detecting module and a heart-rate detecting module are input to an AD port of the MCU microcontroller after analog digital conversion is conducted; a voice module is connected with a SPI port of the MCU microcontroller, and a liquid-crystal warning display screen is connected with the SCI port of the MCU microcontroller through a wireless bluetooth; a car computer adopted by a driver-windshield transparent liquid-crystal guiding display screen is connected with a SCI port of the MCU microcontroller through a bluetooth; and a photoelectric coded disk is connected with an ECT port of the MCU microcontroller, an emergency steering mechanism controlled by a direct current motor is connected with a PWM port of the MCU microcontroller, and an electromagnet emergency braking module is connected with the I/O port of the MCU microcontroller. According to the electrical system of the active-safety guiding device capable of monitoring the emotion of the driver and the control method of the electrical system, the defects existing in a traditional automobile safety device are overcome, the manufacturing cost is low, and the reliability is good.