The utility model is a lighter with safety device. The overwhelming majority of the prior lighters is not arranged with a safety device; therefore, pressing and switching press-handle are not circumscribed and inflammable gas can be easily ignited arising out of unconscious movement, played with by children or unexpected touch on the press-handle by a hard object, which hurts children and endangers public security. The utility model is characterized in that an opening matching a wind cover is arranged at the upper part of the press-handle, producing a pulling part and unlocking part in each side of the opening, and the oil bath wall corresponding to the lower part of the press-handle constitutes a safety convex placed in a locating concave notch by stretching outward. The pulling part cooperates with a bar axis acting on a piezoelectric switch and a distance between the locking part and wind cover is preserved for the former to unlock by sliding. The utility model improves the safety of the lighter to guard against misapply.