The invention discloses a full-automatic welding rod loading and stacking device, which comprises a rack, wherein a welding rod conveying line body used for conveying welding rods, and a material tray conveying line body used for conveying material trays are arranged on the rack; a material tray feeding station, a welding rod loading station and a material tray stacking station are sequentially arranged along a conveying direction of the material tray conveying line body; the material tray feeding station is provided with a stacking device for releasing the material trays onto the material tray conveying line body; the welding rod loading station is provided with a welding rod move-loading and loading device for move-loading the welding rods on the welding rod conveying line body into the material trays on the material tray conveying line body; and the material tray stacking station is provided with a stacking device for staking and storing the material trays full of the welding rods. The full-automatic welding rod loading and stacking device provided by the invention can be used for full-automatically completing loading and stacking of the welding rods, has the advantages of reasonable and compact process and high work efficiency, and is particularly suitable for full-automatically stacking the welding rods and other long-striped workpieces.