<p>A folding lighter that does not injure a finger or inadvertently ignite at pressing of the operating button at time of folding the swingarm to make the lighter compact. A folding lighter comprising body 2 housing a fuel tank 106 and a piezoelectric unit 102 and possessing on a side surface operating button 8, and swingarm 4 connected with free swinging to one end of body 2, and possessing a safety mechanism to prevent folding of swingarm 4 when foreign object 134 interposes between swingarm 4 and operating component 8 at time when swingarm 4 is being folded. The safety mechanism possesses swing preventer 120 that oscillatingly shifts by operation of operating component 8, and swing preventer 120 possesses first arm 121 that is pressed by pressing inward operation of operating component 8, and on the opposite side of axle socket 122 possesses second arm 123 that prevents swingarm 4 from being folded when first arm 121 is pressed by pressing inward operation of operating component 8.</p>
