The invention provides a sweet kaoliang stalk sampling juice extractor, which is characterized by comprising a machine frame, extracting rollers, a guide pipe, a peeling cutter, a crank, a handle, a handle screw bolt, a juice outlet plug, a juice collecting disc and a machine cover, wherein the machine frame consists of a left side plate, a top plate, a bottom plate, a right side plate, a front panel and a back baffle plate; the left side plate, the right side plate, the top plate and the bottom plate are fixed by machine frame screw bolts and screw nuts to be assembled into the machine frame;the extracting rollers comprise an upper extracting roller and a lower extracting roller; the upper extracting roller and the lower extracting roller are parallelly arranged on the left side plate and the right side plate in the machine frame; a gap for discharging kaoliang stalk slag is remained between the upper and lower extracting rollers; the front panel and the back baffle plate are respectively fixed at the front side and the back side of the machine frame; the guide pipe is arranged in a hole of the front panel; the center line of the guide pipe maintains consistency with the center line of the upper and lower extracting rollers; the peeling cutter is arranged on the guide pipe extending out of the front panel; the crank is arranged at the end part of the extracting roller extending out of the left or right side plate; the handle can extend out or retract back. The sweet kaoliang stalk sampling juice extractor has the advantages that the juice taking is convenient; the juice taking quantity is great; the time and the labor are saved; the carrying and the use are convenient.