A limit expansion anchor bolt which belongs to expansion bolt anchored in drillhole with enlarged internal end. It is composed of anchor pile and expansion sleeve matching with anchor pile. Expansion sleeve has one expansion part, on which a plurality of longitudinal bar-shaped troughs are opened. One end of expansion part is connected to expansion sleeve. Top end of internal hole of expansion sleeve is processed into internal thread. Bottom end of expansion part is unthreaded hole with the diameter smaller than that of internal thread. Anchor pile is processed into external thread matching with internal thread of expansion sleeve. Revolving end of anchor pile is processed into polished rod matching with unthreaded hole. The anchor pile can be rotated into expansion sleeve and push off expansion part for unthreaded hole restriction. The expansion anchor bolt features simple structure and easy disassembly and assembly. Anchor pile and expansion sleeve are bonded tightly to prevent the screwing out of anchor pile from expansion part to damage the board. The limit expansion anchor bolt can be applied in the anchorage of various rigid decorative boards and other components.