The invention discloses a loading device for automatic detection of valve rods, and belongs to the field of valve rod conveying devices. The loading device can continuously, orderly and efficiently convey the valve rods. The loading device comprises a machine base, a loading mechanism, a material stopping mechanism and a material catching and turning mechanism; the loading mechanism is composed of a stand column (15) fixed on the machine base (14) and upper sliding rails (21) fixed on the stand column; the material stopping mechanism is composed of a spindle rod (3), installation blocks, stopping pins (31) and a first air cylinder (4); the material catching and turning mechanism is composed of a gear box (10) internally provided with a rack (33) and a gear (32), a rotating seat (8) fixed on a gear shaft (27), a rotating shaft (12) supported on the rotating seat, material catching jaws (13) fixed on the rotating shaft and a second air cylinder (7). The loading device is easy and convenient to load, accurate in loading and positioning, high in efficiency and small in labor intensity and is matched with an automatic valve rod detection device.