The invention discloses equipment and a method for detecting the water content of dehydrated vegetables. The equipment comprises an electronic scale, a vacuum cover, a carrying box, a vacuum pipe anda tray, wherein the tray is arranged on the top of the electronic scale; the carrying box is placed on the tray; the vacuum pipe is arranged in the electronic scale on one side of the tray; the vacuumpipe is an L-shaped pipe; a short-pipe part is vertical to the top of the electronic scale; a short pipe port is exposed out of the top of the electronic scale; a long-pipe part extends outwards fromone side of the electronic scale; the vacuum cover is arranged on the top of the electronic scale; the carrying box, the short-pipe port of the vacuum pipe and the tray are all wrapped in the vacuumcover. The equipment and the method have the characteristics of rapidness and accuracy. The vegetables are dehydrated by heating, baking and evaporating, and meanwhile a vacuum pump is adopted to pumpthe air and moisture in the vacuum cover, so that the evaporation of the moisture in the vegetables is accelerated.