Safety gas burner

A safety gas burner comprising:

• a shell, said shell comprising a front extension tube forwardly extended from a front end thereof, a metal flame tube mounted in said front extension tube, a butane well, a gas valve adapted to control output of fuel gas from said butane well, a gas lever pivoted to said gas valve and adapted to open said gas valve for output of fuel gas from said butane well;
• an igniter mounted in said shell, said igniter having a first terminal connected to said flame tube by a conductor and a second terminal connected to a spark discharging electrode suspended in said flame tube;
• an ignition switch button mounted in a through hole of said shell and stopped against said igniter and adapted for depressing by hand to trigger said igniter and to drive said gas lever to open said gas valve;
• a safety button supported on a spring in a locating hole of said shell and adapted to let said gas lever be driven by said ignition switch button when depressed, said safety button having a cap disposed outside said shell;
• and
• a spring-supported stop member mounted in a sliding slot of said shell and stopped between an outside wall of said shell and the cap of said safety button to stop said safety button from operation.