Abstract: This invention relates to a safety switch structure of a mixer adjustable for a juice extractor in which one safety switch is bound to a main body to which a mixer adjustable for a juice extractor is connected in turns; the bound switch is operated by each special pressing device; the pressing devices are installed to be connected to the pressing devices installed separately at the juice extracting cup and the mixing cup, whereby each safety switch is operated when each juice extracting cup or mixing cup is connected to the main body so that all of the juice extracting cup and the mixing cup used in two ways can be used safely.