The invention relates to a protective slide block zipper. The protective slide block zipper comprises a zipper 2 and a slide block 1 for opening and closing the zipper 2, wherein the upper part of the slide block 1 is a protection structure 19, the root part of the protection structure 19 is of a bending structure 7 capable of being repeatedly bent, a first working bracing surface 14 at one side of the protection structure 19 is fixedly connected with a first slide block hand 11; the zipper 2 comprises a female strip 3 and a male strip 4, and the female strip 3 and the male strip 4 are connected and separated by virtue of the slide block 1. The protective slide block zipper can be easily opened by an adult and cannot be freely opened by a child, the requirement for the safety of the children can be met, the storage period also can be guaranteed, and the economic value and the social value are tremendous.