The invention discloses a micro-scale heat conductive effect switch, mainly comprising a micro-scale heat conductive container provided inside with vacuum space and contains micro working fluid; an effect switch is arranged on a proper position of the micro-scale heat conductive container and is provided flexible structure capable of moving inward and outward. When the micro-scale heat conductive contact conducts heat and makes a change in pressure, the effect switch is driven to extend outward, thereby achieving the function of self-sensing and control; a warning device can be arranged outside the effect switch to achieve the purposes of micro-scale heat conductivity and automatic warning, etc.