A safety switch device for gas gun comprises a safety lever, the safety lever has a stopping block, and at an end of the safety lever is defined with an elastic element which is used to make the safety lever return to its original position, a spark lever is defined with an abutting portion, the stopping block of the safety lever abuts against the lower portion of the abutting portion of the spark lever, such that the spark lever cannot be pressed down directly, so as to produce a passive protection mode.