The invention discloses a rod ladder suitable for field operation. The rod ladder comprises a main rod, two pedals slidably connected to the main rod, and a foldable supporting foot mounted on the lower portion of the main rod. The foldable supporting foot is composed of a plurality of connecting rods and grounding rods; the upper ends of the multiple connecting rods are rotatably connected to themain rod, and the lower ends of the multiple connecting rods are detachably connected with the grounding rods in a one-to-one correspondence mode; the inner ends of the grounding rods are rotatably connected to the bottom of the main rod, and the outer ends of the grounding rods extend outwards; a plurality of positioning holes are formed in the grounding rods; and the lower ends of the connecting rods are connected to the positioning holes through a positioning mechanism. The two pedals support a human body for ascending, during folding, the lower ends of the connecting rods and the grounding rods of the foldable supporting foot are detachably separated, and the connecting rods and the grounding rods can be folded into bundles correspondingly; during using, the connecting rods and the grounding rods are fixedly connected, and unfolding can be achieved for stable supporting; and the lower ends of the connecting rods are connected to the different positioning holes to adjust the anglesof the grounding rods, stable supporting can also be achieved on the uneven ground, using is convenient, and safety is good.