This utility model relates to a trigger sprayer structure with children protection functions, which added a mechanism for limiting the revolving of the head cap on the basis of the former spray gun structure, said mechanism includes a stop groove formed on the head cap as an integral, said stop groove is provided with a elastic joint with the head cap, a pressing component for manual pressing, said trigger is provided with a stop block correspondingly, said stop block insertion component being inserted in the stop groove of said cap. This structure can prevent children from easily revolving the head cap, thus preventing children from using the spray gun containing hazardous liquid.
