The invention relates to the technical field of agricultural auxiliary instruments, and discloses a pillar for agricultural planting. The pillar comprises a pillar cylinder with an opening formed in the upper end of the pillar cylinder, a piston is arranged in the pillar cylinder, and the side wall of the piston is slidably connected to the inner cylinder wall of the pillar cylinder; the end, awayfrom the inner cylinder bottom of the pillar cylinder, of the piston is fixedly connected with a support rod, and the end, away from the piston, of the support rod passes through the opening of the pillar cylinder, extends outwards, and is fixedly connected with a support platform; a fixing opening is formed in the support platform, a fixing slot is formed in the rod wall of the end, close to thepiston, of the support rod, and a spring is fixedly connected to the slot bottom of the fixing slot; and a fixing block is fixedly connected to the end, away from the slot bottom of the fixing slot,of the spring, and a plurality of fixing holes are evenly formed in the cylinder wall of the pillar cylinder at equal intervals in the vertical direction. Through the pillar for agricultural planting,the problems that the height of an existing agricultural planting pillar cannot be adjusted effectively according to needs of planted plants, and the an existing agricultural planting pillar has a singular function are solved.