A foldable safety lighter is provided having a locating block for securing a nozzle tube to a casing at either a first position, permitting the nozzle tube to be longitudinally extended outward from the casing, or a second position, permitting the nozzle tube to be rotated through 180.degree. angle relative to said first position, so as to lie parallel to the casing for reducing storage space. A control knob is rotatable to a triggering position, to trigger a gas tube to discharge gas and simultaneously trigger an electric igniter to discharge sparks to ignite discharged gas from the gas tube. The control knob can be rotated to a locking position to prevent accidental triggering thereof.