The utility model relates to a hand-held hockey stick type crop plant number measuring device that is applied to crop number counting work in a unit area during agricultural production prediction. The measuring device comprises a handle, an extending rod, a linear alignment rod, a U-shaped signal input terminal and a power line; the handle is arranged at the upper end of the extending rod; and the linear alignment rod extends in a linear mode at a horizontal direction. The U-shaped signal input terminal includes a U-shaped rod; one end of the U-shaped rod is connected with the linear alignment rod; an electrode contact I is arranged at the connection position; the other end is provided with a spring that is connected with a dialing piece; and an electrode contact II whose position corresponds to the position of the electrode contact I is arranged at the dialing piece. The provided measuring device has the following advantages: the working efficiency of the agricultural plant number measurement can be effectively improved; the structure is simple; the operation is convenient; the labor amount of the working personnel can be substantially reduced; and the measurement accuracy can be improved.