The invention discloses a switch system, which comprises a microchip and an MMI starting/forbidding interface, wherein, the interface comprises at least a touch sensor type switch. The switch system accords with one of the following configurations: the microchip has the configuration that at least one switch servers as a starting switch when being started, then the microchip controls and provides the gradual and smooth power regulation to a light source, if the forbidding cycle of one switch exceeds the pre-set cycle before the touch sensor type switch is operated, a cutting function is selected; the microchip has the configuration that the cutting function is selected according to the next operation of the touch sensor type switch if the forbidding previous period of the switch is longer than the pre-set cycle, and the microchip also controls the power regulation of the light source; the microchip has the configuration that a switch servers as the starting switch when being started, then the microchip selects the function according to the next operation of the switch based on parameters; the microchip has the configuration that an indicator provides an activation indication to the touch sensor type switch so as to control the function of searching in darkness; the switch system is connected to a circuit which connects a power supply with the light source into a whole, and the switch system comprises an energy storage device.