Abstract: A power-source switch box with a stabilizer, it mainly has a control circuit board in its main body; the control circuit board is provided thereon with a stabilizer and a switch of a power source, the two ends of it are connected with lines respectively at an output terminal and an input terminal of the power source, by turning on/off of the switch of the power source on the main body, the power source provides stable power through the stabilizer for a lamp. When the power source is turned off, the power is cut and renders the stabilizer and the lamp to stop working; thereby the situation that the stabilizer continues to work after the lamp is not in use can be avoided, and thereby the life of use of the lamp can be largely increased.