A laser activator is disclosed to include a main unit, which has a power switch, a power indicator light, a power level adjustment switch, a power intensity indicator light, a laser light activation switch, a laser light working indicator light, a charging socket, a laser light connection jack, and a control circuit, a cable, and a laser contact unit, which is made in the form of an armpit piece, earpiece or vagina plug and electrically connected to the main unit through the cable for emitting low intensity laser to the armpit, ear or vagina to active the cells of the radiated body part.